Minification

[fidian]

Add options, perhaps via custom rules, to manipulate values.

    color: white;
    background-color: #FF0000;
    border-color: rgb(127, 126, 125);

This would be shorter as the following:

    color: #fff;
    background-color: red;
    border-color: #7F7E7D;

[fidian]

Also it would be good to leave off the trailing semicolon.