Fade method
Get color with alpha applied, alpha goes from 0.0 to 1.0
Implementation
@override
ColorD Fade(
ColorD color,
num alpha,
) => run(
() => RaylibDebugLabels.Fade(color, alpha),
() => rl.Core.Fade(
rl.Temp.Color$.Ref1(color).ref,
alpha.toDouble(),
).toD(),
);