diff --git a/client.go b/client.go
new file mode 100644
index 0000000..07a1173
--- /dev/null
+++ b/client.go
@@ -0,0 +1,335 @@
+package lifx
+
+import (
+	//"crypto/tls"
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"strconv"
+	"time"
+)
+
+const defaultUserAgent = "lifx-go"
+
+type (
+	Client struct {
+		accessToken string
+		userAgent   string
+		Client      *http.Client
+	}
+
+	Result struct {
+		Id     string `json:"id"`
+		Label  string `json:"label"`
+		Status Status `json:"status"`
+	}
+
+	Error struct {
+		Field   string   `json:"field"`
+		Message []string `json:"message"`
+	}
+
+	Warning struct {
+		Warning string `json:"warning"`
+	}
+
+	RateLimit struct {
+		Limit     int
+		Remaining int
+		Reset     time.Time
+	}
+
+	Response struct {
+		StatusCode int
+		Header     http.Header
+		Body       io.ReadCloser
+		RateLimit  RateLimit
+	}
+
+	LifxResponse struct {
+		Error    string    `json:"error"`
+		Errors   []Error   `json:"errors"`
+		Warnings []Warning `json:"warnings"`
+		Results  []Result  `json:"results"`
+	}
+)
+
+var errorMap = map[int]error{
+	http.StatusNotFound:            errors.New("Selector did not match any lights"),
+	http.StatusUnauthorized:        errors.New("Bad access token"),
+	http.StatusForbidden:           errors.New("Bad OAuth scope"),
+	http.StatusUnprocessableEntity: errors.New("Missing or malformed parameters"),
+	http.StatusUpgradeRequired:     errors.New("HTTP was used to make the request instead of HTTPS. Repeat the request using HTTPS instead"),
+	http.StatusTooManyRequests:     errors.New("The request exceeded a rate limit"),
+	http.StatusInternalServerError: errors.New("Something went wrong on LIFX's end"),
+	http.StatusBadGateway:          errors.New("Something went wrong on LIFX's end"),
+	http.StatusServiceUnavailable:  errors.New("Something went wrong on LIFX's end"),
+	523:                            errors.New("Something went wrong on LIFX's end"),
+}
+
+func NewClient(accessToken string, options ...func(*Client)) *Client {
+	var c *Client
+	tr := &http.Transport{
+		//TLSNextProto: make(map[string]func(authority string, c *tls.Conn) http.RoundTripper),
+	}
+
+	c = &Client{
+		accessToken: accessToken,
+		Client:      &http.Client{Transport: tr},
+	}
+
+	for _, option := range options {
+		option(c)
+	}
+
+	return c
+}
+
+func WithUserAgent(userAgent string) func(*Client) {
+	return func(c *Client) {
+		c.userAgent = userAgent
+	}
+}
+
+func NewClientWithUserAgent(accessToken string, userAgent string) *Client {
+	tr := &http.Transport{
+		//TLSNextProto: make(map[string]func(authority string, c *tls.Conn) http.RoundTripper),
+	}
+	return &Client{
+		accessToken: accessToken,
+		userAgent:   userAgent,
+		Client:      &http.Client{Transport: tr},
+	}
+}
+
+func NewResponse(r *http.Response) (*Response, error) {
+	resp := Response{
+		StatusCode: r.StatusCode,
+		Header:     r.Header,
+		Body:       r.Body,
+	}
+
+	if t := r.Header.Get("X-RateLimit-Limit"); t != "" {
+		if n, err := strconv.ParseInt(t, 10, 32); err == nil {
+			resp.RateLimit.Limit = int(n)
+		} else {
+			return nil, err
+		}
+	}
+
+	if t := r.Header.Get("X-RateLimit-Remaining"); t != "" {
+		if n, err := strconv.ParseInt(t, 10, 32); err == nil {
+			resp.RateLimit.Remaining = int(n)
+		} else {
+			return nil, err
+		}
+	}
+
+	if t := r.Header.Get("X-RateLimit-Reset"); t != "" {
+		if n, err := strconv.ParseInt(t, 10, 32); err == nil {
+			resp.RateLimit.Reset = time.Unix(n, 0)
+		} else {
+			return nil, err
+		}
+	}
+
+	return &resp, nil
+}
+
+func (r *Response) IsError() bool {
+	return r.StatusCode > 299
+}
+
+func (r *Response) GetLifxError() (err error) {
+	var (
+		s *LifxResponse
+	)
+	if err = json.NewDecoder(r.Body).Decode(&s); err != nil {
+		return nil
+	}
+	return errors.New(s.Error)
+}
+
+func (c *Client) NewRequest(method, url string, body io.Reader) (req *http.Request, err error) {
+	req, err = http.NewRequest(method, url, body)
+	if err != nil {
+		return
+	}
+	req.Header.Add("Authorization", fmt.Sprintf("Bearer %s", c.accessToken))
+	req.Header.Add("Content-Type", "application/json")
+	req.Header.Add("User-Agent", c.userAgent)
+	return
+}
+
+func (c *Client) setState(selector string, state State) (*Response, error) {
+	var (
+		err  error
+		j    []byte
+		req  *http.Request
+		r    *http.Response
+		resp *Response
+	)
+
+	if j, err = json.Marshal(state); err != nil {
+		return nil, err
+	}
+
+	if req, err = c.NewRequest("PUT", EndpointState(selector), bytes.NewBuffer(j)); err != nil {
+		return nil, err
+	}
+
+	if r, err = c.Client.Do(req); err != nil {
+		return nil, err
+	}
+
+	resp, err = NewResponse(r)
+	if err != nil {
+		return nil, err
+	}
+
+	return resp, nil
+}
+
+func (c *Client) setStates(selector string, states States) (*Response, error) {
+	var (
+		err  error
+		j    []byte
+		req  *http.Request
+		r    *http.Response
+		resp *Response
+	)
+
+	if j, err = json.Marshal(states); err != nil {
+		return nil, err
+	}
+
+	if req, err = c.NewRequest("PUT", EndpointStates(), bytes.NewBuffer(j)); err != nil {
+		return nil, err
+	}
+
+	if r, err = c.Client.Do(req); err != nil {
+		return nil, err
+	}
+
+	resp, err = NewResponse(r)
+	if err != nil {
+		return nil, err
+	}
+
+	return resp, nil
+}
+
+func (c *Client) toggle(selector string, duration float64) (*Response, error) {
+	var (
+		err  error
+		j    []byte
+		req  *http.Request
+		r    *http.Response
+		resp *Response
+	)
+
+	if j, err = json.Marshal(&Toggle{Duration: duration}); err != nil {
+		return nil, err
+	}
+
+	if req, err = c.NewRequest("POST", EndpointToggle(selector), bytes.NewBuffer(j)); err != nil {
+		return nil, err
+	}
+
+	if r, err = c.Client.Do(req); err != nil {
+		return nil, err
+	}
+
+	resp, err = NewResponse(r)
+	if err != nil {
+		return nil, err
+	}
+
+	return resp, nil
+}
+
+func (c *Client) validateColor(color Color) (*Response, error) {
+	var (
+		err  error
+		req  *http.Request
+		r    *http.Response
+		resp *Response
+		q    url.Values
+	)
+
+	if req, err = c.NewRequest("GET", EndpointColor(), nil); err != nil {
+		return nil, err
+	}
+
+	q = req.URL.Query()
+	q.Set("string", color.ColorString())
+	req.URL.RawQuery = q.Encode()
+
+	if r, err = c.Client.Do(req); err != nil {
+		return nil, err
+	}
+
+	resp, err = NewResponse(r)
+	if err != nil {
+		return nil, err
+	}
+
+	return resp, nil
+}
+
+func (c *Client) listLights(selector string) (*Response, error) {
+	var (
+		err  error
+		req  *http.Request
+		r    *http.Response
+		resp *Response
+	)
+
+	if req, err = c.NewRequest("GET", EndpointListLights(selector), nil); err != nil {
+		return nil, err
+	}
+
+	if r, err = c.Client.Do(req); err != nil {
+		return nil, err
+	}
+
+	resp, err = NewResponse(r)
+	if err != nil {
+		return nil, err
+	}
+
+	return resp, nil
+}
+
+func (c *Client) stateDelta(selector string, delta StateDelta) (*Response, error) {
+	var (
+		err  error
+		j    []byte
+		req  *http.Request
+		r    *http.Response
+		resp *Response
+	)
+
+	if j, err = json.Marshal(delta); err != nil {
+		return nil, err
+	}
+
+	if req, err = c.NewRequest("POST", EndpointStateDelta(selector), bytes.NewBuffer(j)); err != nil {
+		return nil, err
+	}
+
+	if r, err = c.Client.Do(req); err != nil {
+		return nil, err
+	}
+
+	resp, err = NewResponse(r)
+	if err != nil {
+		return nil, err
+	}
+
+	return resp, nil
+}
diff --git a/color.go b/color.go
new file mode 100644
index 0000000..7028677
--- /dev/null
+++ b/color.go
@@ -0,0 +1,224 @@
+package lifx
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net/http"
+	"strings"
+)
+
+type (
+	Color interface {
+		ColorString() string
+	}
+)
+
+type (
+	RGBColor struct {
+		R, G, B uint8
+	}
+
+	HSBKColor struct {
+		H *float32 `json:"hue"`
+		S *float32 `json:"saturation"`
+		B *float32 `json:"brightness"`
+		K *int16   `json:"kelvin"`
+	}
+
+	NamedColor string
+)
+
+const (
+	KelvinCandlelight    = 1500
+	KelvinSunset         = 2000
+	KelvinUltraWarm      = 2500
+	KelvinIncandescent   = 2700
+	KelvinWarm           = 3000
+	KelvinCool           = 4000
+	KelvinCoolDaylight   = 4500
+	KelvinSoftDaylight   = 5000
+	KelvinDaylight       = 5600
+	KelvinNoonDaylight   = 6000
+	KelvinBrightDaylight = 6500
+	KelvinCloudDaylight  = 7000
+	KelvinBlueDaylight   = 7500
+	KelvinBlueOvercast   = 8000
+	KelvinBlueIce        = 9000
+
+	HueWhite  = 0
+	HueRed    = 0
+	HueOrange = 36
+	HueYellow = 60
+	HueGreen  = 120
+	HueCyan   = 180
+	HueBlue   = 250
+	HuePurple = 280
+	HuePink   = 325
+)
+
+var (
+	DefaultWhites = map[string]int{
+		"candlelight":    KelvinCandlelight,
+		"sunset":         KelvinSunset,
+		"ultrawarm":      KelvinUltraWarm,
+		"incandescent":   KelvinIncandescent,
+		"warm":           KelvinWarm,
+		"cool":           KelvinCool,
+		"cooldaylight":   KelvinCoolDaylight,
+		"softdaylight":   KelvinSoftDaylight,
+		"daylight":       KelvinDaylight,
+		"noondaylight":   KelvinNoonDaylight,
+		"brightdaylight": KelvinBrightDaylight,
+		"clouddaylight":  KelvinCloudDaylight,
+		"bluedaylight":   KelvinBlueDaylight,
+		"blueovercast":   KelvinBlueOvercast,
+		"blueice":        KelvinBlueIce,
+	}
+)
+
+func NewRGBColor(r, g, b uint8) (RGBColor, error) {
+	var c RGBColor
+	if (r < 0 || r > 255) && (g < 0 || r > 255) && (b < 0 || b > 255) {
+		return c, errors.New("values must be between 0-255")
+	}
+
+	return RGBColor{R: r, G: g, B: b}, nil
+}
+
+func NewHSColor(h, s float32) (HSBKColor, error) {
+	var c HSBKColor
+
+	if h < 0 || h > 360 {
+		return c, errors.New("hue must be between 0.0-360.0")
+	}
+	if s < 0 || s > 1 {
+		return c, errors.New("saturation must be between 0.0-1.0")
+	}
+
+	c = HSBKColor{
+		H: Float32Ptr(h),
+		S: Float32Ptr(s),
+	}
+
+	return c, nil
+}
+
+func NewHSBColor(h, s, b float32) (HSBKColor, error) {
+	var c HSBKColor
+
+	if h < 0 || h > 360 {
+		return c, errors.New("hue must be between 0.0-360.0")
+	}
+	if s < 0 || s > 1 {
+		return c, errors.New("saturation must be between 0.0-1.0")
+	}
+	if b < 0 || b > 1 {
+		return c, errors.New("brightness must be between 0.0-1.0")
+	}
+
+	c = HSBKColor{
+		H: Float32Ptr(h),
+		S: Float32Ptr(s),
+		B: Float32Ptr(b),
+	}
+
+	return c, nil
+}
+
+func NewRed() (HSBKColor, error)    { return NewHSColor(HueRed, 1) }
+func NewOrange() (HSBKColor, error) { return NewHSColor(HueOrange, 1) }
+func NewYellow() (HSBKColor, error) { return NewHSColor(HueYellow, 1) }
+func NewGreen() (HSBKColor, error)  { return NewHSColor(HueGreen, 1) }
+func NewCyan() (HSBKColor, error)   { return NewHSColor(HueCyan, 1) }
+func NewPurple() (HSBKColor, error) { return NewHSColor(HuePurple, 1) }
+func NewPink() (HSBKColor, error)   { return NewHSColor(HuePink, 1) }
+
+func NewWhite(k int16) (HSBKColor, error) {
+	var c HSBKColor
+
+	if k < 1500 || k > 9000 {
+		return c, errors.New("kelvin must be between 1500-9000")
+	}
+
+	c = HSBKColor{
+		H: Float32Ptr(HueWhite),
+		S: Float32Ptr(0.0),
+		K: Int16Ptr(k),
+	}
+
+	return c, nil
+}
+
+func NewWhiteString(s string) (HSBKColor, error) {
+	k, ok := DefaultWhites[s]
+
+	if !ok {
+		return HSBKColor{}, fmt.Errorf("'%s' is not a valid default white", s)
+	}
+
+	return NewWhite(int16(k))
+}
+
+func (c RGBColor) ColorString() string {
+	return fmt.Sprintf("rgb:%d,%d,%d", c.R, c.G, c.B)
+}
+
+func (c RGBColor) Hex() string {
+	return fmt.Sprintf("#%x%x%x", c.R, c.G, c.B)
+}
+
+func (c HSBKColor) ColorString() string {
+	var s []string
+	if c.H != nil {
+		s = append(s, fmt.Sprintf("hue:%g", *c.H))
+	}
+	if c.S != nil {
+		s = append(s, fmt.Sprintf("saturation:%g", *c.S))
+	}
+	if c.B != nil {
+		s = append(s, fmt.Sprintf("brightness:%g", *c.B))
+	}
+	if c.K != nil {
+		s = append(s, fmt.Sprintf("kelvin:%d", *c.K))
+	}
+	return strings.Join(s, " ")
+}
+
+func (c HSBKColor) MarshalText() ([]byte, error) {
+	return []byte(c.ColorString()), nil
+}
+
+func (c RGBColor) MarshalText() ([]byte, error) {
+	return []byte(c.ColorString()), nil
+}
+
+func (c NamedColor) ColorString() string {
+	return string(c)
+}
+
+func (c *Client) ValidateColor(color Color) (Color, error) {
+	var (
+		err  error
+		s    *HSBKColor
+		r    *http.Response
+		resp *Response
+	)
+
+	if resp, err = c.validateColor(color); err != nil {
+		return nil, err
+	}
+
+	resp, err = NewResponse(r)
+	if err != nil {
+		return nil, err
+	}
+
+	defer resp.Body.Close()
+
+	if err = json.NewDecoder(resp.Body).Decode(&s); err != nil {
+		return nil, err
+	}
+
+	return s, nil
+}
diff --git a/endpoints.go b/endpoints.go
new file mode 100644
index 0000000..6db0c5b
--- /dev/null
+++ b/endpoints.go
@@ -0,0 +1,35 @@
+package lifx
+
+import (
+	"fmt"
+	"net/url"
+	"path"
+)
+
+func BuildURL(rawurl, rawpath string) string {
+	u, _ := url.Parse(rawurl)
+	u.Path = path.Join(u.Path, rawpath)
+	return u.String()
+}
+
+var (
+	Endpoint      = "https://api.lifx.com/v1"
+	EndpointState = func(selector string) string {
+		return BuildURL(Endpoint, fmt.Sprintf("/lights/%s/state", selector))
+	}
+	EndpointStateDelta = func(selector string) string {
+		return BuildURL(Endpoint, fmt.Sprintf("/lights/%s/state/delta", selector))
+	}
+	EndpointListLights = func(selector string) string {
+		return BuildURL(Endpoint, fmt.Sprintf("/lights/%s", selector))
+	}
+	EndpointStates = func() string {
+		return BuildURL(Endpoint, "/lights/states")
+	}
+	EndpointColor = func() string {
+		return BuildURL(Endpoint, "/color")
+	}
+	EndpointToggle = func(selector string) string {
+		return BuildURL(Endpoint, fmt.Sprintf("/lights/%s/toggle", selector))
+	}
+)
diff --git a/lights.go b/lights.go
new file mode 100644
index 0000000..6137cd2
--- /dev/null
+++ b/lights.go
@@ -0,0 +1,221 @@
+package lifx
+
+import (
+	//"crypto/tls"
+	"encoding/json"
+	"net/http"
+	"time"
+)
+
+const (
+	OK       Status = "ok"
+	TimedOut Status = "timed_out"
+	Offline  Status = "offline"
+)
+
+type (
+	Status string
+
+	Selector struct {
+		Id   string `json:"id"`
+		Name string `json:"name"`
+	}
+
+	Product struct {
+		Name         string       `json:"name"`
+		Identifier   string       `json:"identifier"`
+		Company      string       `json:"company"`
+		Capabilities Capabilities `json:"capabilities"`
+	}
+
+	Capabilities struct {
+		HasColor             bool    `json:"has_color"`
+		HasVariableColorTemp bool    `json:"has_variable_color_temp"`
+		HasIR                bool    `json:"has_ir"`
+		HasChain             bool    `json:"has_chain"`
+		HasMultizone         bool    `json:"has_multizone"`
+		MinKelvin            float64 `json:"min_kelvin"`
+		MaxKelvin            float64 `json:"max_kelvin"`
+	}
+
+	Light struct {
+		Id              string    `json:"id"`
+		UUID            string    `json:"uuid"`
+		Label           string    `json:"label"`
+		Connected       bool      `json:"connected"`
+		Power           string    `json:"power"`
+		Color           HSBKColor `json:"color"`
+		Brightness      float64   `json:"brightness"`
+		Effect          string    `json:"effect"`
+		Group           Selector  `json:"group"`
+		Location        Selector  `json:"location"`
+		Product         Product   `json:"product"`
+		LastSeen        time.Time `json:"last_seen"`
+		SecondsLastSeen float64   `json:"seconds_last_seen"`
+	}
+
+	State struct {
+		Power      string  `json:"power,omitempty"`
+		Color      Color   `json:"color,omitempty"`
+		Brightness float64 `json:"brightness,omitempty"`
+		Duration   float64 `json:"duration,omitempty"`
+		Infrared   float64 `json:"infrared,omitempty"`
+		Fast       bool    `json:"fast,omitempty"`
+	}
+
+	StateDelta struct {
+		Power      *string  `json:"power,omitempty"`
+		Duration   *float64 `json:"duration,omitempty"`
+		Infrared   *float64 `json:"infrared,omitempty"`
+		Hue        *float64 `json:"hue,omitempty"`
+		Saturation *float64 `json:"saturation,omitempty"`
+		Brightness *float64 `json:"brightness,omitempty"`
+		Kelvin     *int     `json:"kelvin,omitempty"`
+	}
+
+	StateWithSelector struct {
+		State
+		Selector string `json:"selector"`
+	}
+
+	States struct {
+		States   []StateWithSelector `json:"states,omitempty"`
+		Defaults State               `json:"defaults,omitempty"`
+	}
+
+	Toggle struct {
+		Duration float64 `json:"duration,omitempty"`
+	}
+)
+
+func (c *Client) SetState(selector string, state State) (*LifxResponse, error) {
+	var (
+		err  error
+		s    *LifxResponse
+		resp *Response
+	)
+
+	if resp, err = c.setState(selector, state); err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	if resp.IsError() {
+		return nil, resp.GetLifxError()
+	}
+
+	if state.Fast && resp.StatusCode == http.StatusAccepted {
+		return nil, nil
+	}
+
+	if err = json.NewDecoder(resp.Body).Decode(&s); err != nil {
+		return nil, err
+	}
+
+	return s, nil
+}
+
+func (c *Client) FastSetState(selector string, state State) (*LifxResponse, error) {
+	state.Fast = true
+	return c.SetState(selector, state)
+}
+
+func (c *Client) SetStates(selector string, states States) (*LifxResponse, error) {
+	var (
+		err  error
+		s    *LifxResponse
+		resp *Response
+	)
+
+	if resp, err = c.setStates(selector, states); err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	if err = json.NewDecoder(resp.Body).Decode(&s); err != nil {
+		return nil, err
+	}
+
+	return s, nil
+}
+
+func (c *Client) StateDelta(selector string, delta StateDelta) (*LifxResponse, error) {
+	var (
+		err  error
+		s    *LifxResponse
+		resp *Response
+	)
+
+	if resp, err = c.stateDelta(selector, delta); err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	if err = json.NewDecoder(resp.Body).Decode(&s); err != nil {
+		return nil, err
+	}
+
+	return s, nil
+}
+
+func (c *Client) Toggle(selector string, duration float64) (*LifxResponse, error) {
+	var (
+		err  error
+		s    *LifxResponse
+		resp *Response
+	)
+
+	if resp, err = c.toggle(selector, duration); err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	if resp.IsError() {
+		return nil, resp.GetLifxError()
+	}
+
+	if err = json.NewDecoder(resp.Body).Decode(&s); err != nil {
+		return nil, err
+	}
+
+	return s, nil
+}
+
+func (c *Client) ListLights(selector string) ([]Light, error) {
+	var (
+		err  error
+		s    []Light
+		resp *Response
+	)
+
+	if resp, err = c.listLights(selector); err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode > 299 {
+		return nil, resp.GetLifxError()
+	}
+
+	if err = json.NewDecoder(resp.Body).Decode(&s); err != nil {
+		return nil, err
+	}
+
+	return s, nil
+}
+
+func (c *Client) PowerOff(selector string) (*LifxResponse, error) {
+	return c.SetState(selector, State{Power: "off"})
+}
+
+func (c *Client) FastPowerOff(selector string) {
+	c.SetState(selector, State{Power: "off", Fast: true})
+}
+
+func (c *Client) PowerOn(selector string) (*LifxResponse, error) {
+	return c.SetState(selector, State{Power: "on"})
+}
+
+func (c *Client) FastPowerOn(selector string) {
+	c.SetState(selector, State{Power: "on", Fast: true})
+}
diff --git a/util.go b/util.go
new file mode 100644
index 0000000..c0c3b18
--- /dev/null
+++ b/util.go
@@ -0,0 +1,7 @@
+package lifx
+
+func StringPtr(v string) *string    { return &v }
+func Float64Ptr(v float64) *float64 { return &v }
+func Float32Ptr(v float32) *float32 { return &v }
+func IntPtr(v int) *int             { return &v }
+func Int16Ptr(v int16) *int16       { return &v }