Usually Blue, sometimes red. My 88 year old dad said the red looks good with all the red stitching. Then sometimes I play around, Usually try purple for a bit.
Rocking a blue that I managed to get as close to the Bludicrous paint as possible. I really wish you could save the settings and toggle between them though. It's too bright at night and too dim during the day.
Side note: I cannot get that slider to give me a nice green no matter what I do!