change_color($color, [$red], [$green], [$blue], [$hue], [$saturation], [$lightness], [$alpha]) Changes one or more properties
alpha($color) Returns the alpha component (opacity) of a color. This is 1 unless otherwise specified. This
floor($number) Rounds a number down to the previous whole number.
comparable($number1, $number2) Returns whether two numbers can added, subtracted, or compared.
hsl($hue, $saturation, $lightness) Creates a Color from hue, saturation, and lightness values
selector_unify($selector1, $selector2) Unifies two selectors into a single selector that matches only elements matched by
nth($list, $n) Gets the nth item in a list. Note that unlike some languages, the first item
opacity($color) Returns the alpha component (opacity) of a color. This is 1 unless otherwise specified.
str_slice($string, $start-at, $end-at:-1) Extracts a substring from $string. The substring will begin at index
opacify($color, $amount) Also known as: fade_in Makes
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