Make sure you look into legalities before you go changing anything; it's generally illegal to use differently coloured lights on the roads, and with good reason.
"My friends, love is better than anger. Hope is better than fear. Optimism is better than despair. So let us be loving, hopeful and optimistic. And we'll change the world." - Jack Layton, 1950-2011
] 1987 Chevrolet Camaro IROC-Z, 5.7L TPI/Auto
] 2004 Pontiac Sunfire, 2.2L Ecotec/5sp