diff --git a/client.go b/client.go
index d492acb..0a85f12 100644
--- a/client.go
+++ b/client.go
@@ -86,6 +86,8 @@ func (s *Client) SetState(selector string, state State) ([]Result, error) {
 		return nil, err
 	}
 
+	fmt.Println(string(j))
+
 	res, err := s.Request("PUT", EndpointState(selector), bytes.NewBuffer(j))
 	if err != nil {
 		return nil, err
@@ -124,7 +126,6 @@ func (s *Client) Toggle(selector string, duration float64) ([]Result, error) {
 
 func (s *Client) PowerOff(selector string) ([]Result, error) {
 	return s.SetState(selector, State{Power: "off"})
-
 }
 
 func (s *Client) FastPowerOff(selector string) {
diff --git a/structs.go b/structs.go
index f821b1b..80a23bf 100644
--- a/structs.go
+++ b/structs.go
@@ -1,17 +1,23 @@
 package lifx
 
 import (
+	"fmt"
 	"net/http"
+	"strings"
 )
 
-const API_BASE_URL = "https://api.lifx.com/v1"
+type (
+	Color interface {
+		ColorString() string
+	}
+)
 
 type (
 	Status string
 
 	State struct {
 		Power      string  `json:"power,omitempty"`
-		Color      string  `json:"color,omitempty"`
+		Color      Color   `json:"color,omitempty"`
 		Brightness float64 `json:"brightness,omitempty"`
 		Duration   float64 `json:"duration,omitempty"`
 		Infrared   float64 `json:"infrared,omitempty"`
@@ -46,6 +52,15 @@ type (
 	Toggle struct {
 		Duration float64 `json:"duration,omitempty"`
 	}
+
+	RGBColor struct {
+		R, G, B uint8
+	}
+
+	HSBKColor struct {
+		H, K int16
+		S, B float32
+	}
 )
 
 const (
@@ -57,3 +72,42 @@ const (
 func (s Status) Success() bool {
 	return s == OK
 }
+
+func NewRGBColor(r, g, b uint8) (*RGBColor, error) {
+	return &RGBColor{R: r, G: g, B: b}, nil
+}
+
+func NewHSBKColor() HSBKColor {
+	var c HSBKColor
+	c.H, c.S, c.B, c.K = -1, -1, -1, -1
+	return c
+}
+
+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 >= 0 {
+		s = append(s, fmt.Sprintf("hue:%d", c.H))
+	}
+	if c.S >= 0 {
+		s = append(s, fmt.Sprintf("saturation:%g", c.S))
+	}
+	if c.B >= 0 {
+		s = append(s, fmt.Sprintf("brightness:%g", c.B))
+	}
+	if c.K >= 0 {
+		s = append(s, fmt.Sprintf("kelvin:%d", c.K))
+	}
+	return strings.Join(s, " ")
+}
+
+func (c HSBKColor) MarshalText() ([]byte, error) {
+	return []byte(c.ColorString()), nil
+}