Returns a drawing flag with RGB color code
@status current Introduced in 2.2.0
r
(integer) a number between 0 and 255 that expresses te amount of red in the color
g
(integer) a number between 0 and 255 that expresses te amount of green in the color
b
(integer) a number between 0 and 255 that expresses te amount of blue in the color
flag
with RGB565 color
Only available on radios with color display