+public:
+ struct RGB {
+ int r;
+ int g;
+ int b;
+ RGB(int red, int green, int blue) : r(red), g(green), b(blue) {}
+ // color is in ARGB format
+ RGB(unsigned long color)
+ : r((color >> 16) & 0xff),
+ g((color >> 8) & 0xff),
+ b((color) & 0xff) {}
+ };
+
+private: