Function rgba 

pub fn rgba(r: u8, g: u8, b: u8, a: f32) -> RGBA

Constructs a RGB Color from numerical values, similar to the rgba function in CSS.

The alpha value is expressed as a float. Values outside of the 0.0-1.0 range will cause a panic.

Example

use css_colors::{Color, rgba};

let salmon = rgba(250, 128, 114, 0.50);

assert_eq!(salmon.to_css(), "rgba(250, 128, 114, 0.50)");