Added a couple of useful color utilities.
Added a couple of useful color utilities.


hradec/cortex,davidsminor/cortex,goddardl/cortex,danieldresser/cortex,lento/cortex,appleseedhq/cortex,davidsminor/cortex,danieldresser/cortex,hradec/cortex,goddardl/cortex,lento/cortex,appleseedhq/cortex,hradec/cortex,davidsminor/cortex,goddardl/cortex,davidsminor/cortex,danieldresser/cortex,lento/cortex,danieldresser/cortex,appleseedhq/cortex