rework color system and make it work with drivers.

internal/drivers/nanoleaf/bridge.go

@@ -10,7 +10,6 @@ import (
 	"io"
 	"io/ioutil"
 	"log"
-	"math"
 	"net"
 	"net/http"
 	"strconv"
@@ -31,11 +30,12 @@ type bridge struct {
 func (b *bridge) Devices() []models.Device {
 	results := make([]models.Device, 0, len(b.panels))
 	for i, panel := range b.panels {
+		// Find normalized RGB and intensity
 		red := float64(panel.ColorRGBA[0]) / 255.0
 		green := float64(panel.ColorRGBA[1]) / 255.0
 		blue := float64(panel.ColorRGBA[2]) / 255.0
-
-		hue, sat, value := colorful.LinearRgb(red, green, blue).Hsv()
+		hue, sat, value := colorful.Color{R: red, G: green, B: blue}.Hsv()
+		rgb := colorful.Hsv(hue, sat, 1)
 
 		shapeType, shapeTypeOK := shapeTypeMap[panel.ShapeType]
 		if !shapeTypeOK {
@@ -70,10 +70,11 @@ func (b *bridge) Devices() []models.Device {
 			UserProperties: nil,
 			State: models.DeviceState{
 				Power: panel.ColorRGBA[3] == 0,
-				Color: models.ColorValue{
-					Hue:        math.Mod(hue, 360),
-					Saturation: sat,
-				},
+				Color: models.ColorValue{RGB: &models.ColorRGB{
+					Red:   rgb.R,
+					Green: rgb.G,
+					Blue:  rgb.B,
+				}},
 				Intensity:   value,
 				Temperature: 0,
 			},
@@ -172,9 +173,20 @@ func (b *bridge) Update(devices []models.Device) {
 		for _, panel := range b.panels {
 			if panel.ID == uint16(id) {
 				if device.State.Power {
-					color := colorful.Hsv(device.State.Color.Hue, device.State.Color.Saturation, device.State.Intensity)
+					rgbColor, ok := device.State.Color.ToRGB()
+					if !ok {
+						newColor := [4]byte{255, 255, 255, 255}
+						if newColor != panel.ColorRGBA {
+							panel.update(newColor, time.Now().Add(time.Millisecond*220))
+						}
 
-					red, green, blue := color.RGB255()
+						continue
+					}
+
+					rgb := rgbColor.RGB.AtIntensity(device.State.Intensity)
+					red := byte(rgb.Red * 255.9)
+					green := byte(rgb.Green * 255.9)
+					blue := byte(rgb.Blue * 255.9)
 					newColor := [4]byte{red, green, blue, 255}
 					if newColor != panel.ColorRGBA {
 						panel.update(newColor, time.Now().Add(time.Millisecond*220))