fun rgba(vararg expressions: Expression): Expression

Creates a color value from red, green, blue components, which must range between 0 and 255, and an alpha component which must range between 0 and 1. If any component is out of range, the expression is an error.

fun rgba(block: Expression.ExpressionBuilder.() -> Unit): Expression

DSL function for "rgba".

fun rgba(red: Double, green: Double, blue: Double, alpha: Double): Expression

Construct a RGBA color expression from numbers.