What i like about the HSL color model is that if i leave saturation and lightness fixed and only change the hue, i get a linear representation of colors from all over the spectrum. With saturation at 100% and lightness at 50% i get bright and vivid colors that are clean mixes of only two RGB colors each. I think that gives a more intuitive access to colors and also possibly interesting ways to automate the use of colors.
This patch converts HSL to RGB colors: hsl2rgb.zip
This is an implementation of the algorithm i found here: https://stackoverflow.com/a/9493060.
Keywords: HSL. hue, saturation, lightness, HSB, hue, saturation, brightness, HSV, hue, saturation, value, RGB, red, green, blue, converter