Color theory is simple to apply with CSS. The type of veneer I'm describing goes way beyond that. Fortunately with CSS3, more of it is moving to the style sheet

Color theory is simple to apply with CSS. The type of veneer I'm describing goes way beyond that. Fortunately with CSS3, more of it is moving to the style sheet but it was very tedious until LESS and mixins came into the picture. Don't forget split testing suffers from ceiling effect.