Format [r, g, b, a] (0..1 components) as a hex string. Emits #rrggbb when alpha is exactly 1 (or omitted), otherwise #rrggbbaa.
#rrggbb
#rrggbbaa
Format [r, g, b, a] (0..1 components) as a hex string. Emits
#rrggbbwhen alpha is exactly 1 (or omitted), otherwise#rrggbbaa.