LAY.rgba( r, g, b, a )

Returns LAY.Color representing in rgba format the color rgba(r,g,b,a).

r: (number) A number between 0-255 representing red g: (number) A number between 0-255 representing green b: (number) A number between 0-255 representing blue
a: (number) A number between 0-1 representing alpha (opacity)