LESS variables should follow specificity principle

[anselmbradford]

Make LESS variables go from generic to specific, so instead of @large-font have @font-large. Instead @Gray-Color have @color-gray. So "color" is generic and "gray" is specific. This allows adding of more specificity later on, like @color-gray-light-alpha50. Then with autocomplete you can walk down the line of generic to specific when typing out these variables in sublime.