As others keep saying, Coloured LEDS are not really the way to go. However, if you want to change the colour of the dash and switches - and I`m all for that, then this may help you decide how to best do it.
1st) Give up with the LED conversion comments and kits - they are simply not workable in 99% of cars
2) Have a look at the bulbs that currently provide the illumination, if they are coloured bulbs, then simply replace with coloured bulbs of your chosen colour choice - some will talk of painting the bulbs with glass paint - don`t bother, it only lasts a few weeks before it burns off.
3) If you have clear bulbs, then the colour will come from a translucent film that is affixed somewhere near the front edge of whatever you are looking at. Changing the colour is a case of changing the translucent film for a different colour - can be very complex to do, but well worth the effort, and as standard bulbs are still retained, the viewing light level is seldom impaired. With Christmas coming up, don`t be tempted to use the clear film from the Roses sweet wrappers (!) as they wrinkle if placed by a hot bulb - but instead go to a good lighting store or search for coloured lighting filters, comes as a large sheet, a bit like acetate, and simply cut it to size.
Hope this helps.
