AABBGGRR (same format as little-endian RGBA image, coincidentally, the same as arsd.color)
Supports: "#rgb", "#rrggbb", "#argb", "#aarrggbb"
AABBGGRR (same format as little-endian RGBA image, coincidentally, the same as arsd.color)
AARRGGBB
Is this color completely opaque?
Is this color completely transparent?
AABBGGRR (same format as little-endian RGBA image, coincidentally, the same as arsd.color)
AARRGGBB
default color is transparent (a=1 is opaque)
NanoVega RGBA color