# File lib/sass/script/functions.rb, line 693 def saturate(color, amount = nil) # Support the filter effects definition of saturate. # https://dvcs.w3.org/hg/FXTF/raw-file/tip/filters/index.html return Sass::Script::String.new("saturate(#{color})") if amount.nil? _adjust(color, amount, :saturation, 0..100, :+, "%") end