add colormodw for brightness module

modules/backlight

@@ -2,6 +2,8 @@
 
 DIR="/sys/class/backlight"
 
+[[ "${BLOCK_INSTANCE}" == "color" ]] && MODE="color" || MODE="bw"
+
 if [[ -d "$DIR/acpi_video0" ]]; then
    DIR="$DIR/acpi_video0"
 elif [[ -d "$DIR/intel_backlight" ]]; then
@@ -12,12 +14,29 @@ else
    exit 33
 fi
 
-cat "$DIR/brightness" "$DIR/max_brightness" | gawk '
-    NR==1 { cbr = $1 }
-    NR==2 { mbr = $1 }
+cat "$DIR/brightness" "$DIR/max_brightness" | gawk -v MODE="$MODE" '
+    NR==1 { current_brightness = $1 }
+    NR==2 { max_brightness = $1 }
     END {
-        printf("%d%\n", cbr / mbr * 100)
-        printf("%d\n", cbr / mbr * 100)
-        print("\n")
+        relative_brightness = ( current_brightness / max_brightness ) * 100
+        printf("%d%\n", relative_brightness)
+        printf("%d\n", relative_brightness)
+        if (MODE == "color") {
+            if (relative_brightness < 50) {
+                print("#04B431\n")
+            } else if (relative_brightness < 60) {
+                print("#A8FF00\n")
+            } else if (relative_brightness < 70) {
+                print("#FFF600\n")
+            } else if (relative_brightness < 80) {
+                print("#FFAE00\n")
+            } else if (relative_brightness < 90) {
+                print("#FF0000\n")
+            } else {
+                exit 33
+            }
+        } else {
+            printf("\n")
+        }
     }
 '