discolored out put is usually a sign of the bulb dying. It is also a sign of the ballast or voltage being irregular.....which leads to the bulb dying. Obvious at this point however I know... When replacing HID bulbs they must NEVER be touched by your skin. This is the MOST common reason for one bulb dying faster than the other. A voltage irregularity will do the same thing and based on the other electrical problems that seems to go along with your issues, I would guess it is in your wiring or your ballast. G/L