I did the exact same thing with all the led's in the interior-mine are all red(all gauge led's,turn signals,high beam led,indicator that lights when low beams are on,AC led's,lighter led,trans position led,power window led, and 4-led dome light-a perfect mood light) I even made my led's in my in-dash Kenwood equalizer/xover red. I found that blue led's were too dim. It looks smooth. I'll post pics soon!
I didn't want to mess with the leds in my Pioneer TV-but someday I have a lot of time I'll think about that too.