I checked at Radio Shack for white LEDS, but they wanted nearly $6 for one of them, so i decided to pass. I saw groovygamegear sells white LEDS for $.49, but shipping was $7, so that made no sense either. so last night i bought a cheap LED keychain flashlight at walmart. it was pretty bright and cost $2, so i figured it was worth a try. when i took it apart, i noticed that it was just an LED with two 3v batteries between the two leads...when you squeezed it, it lit up. so this was painless to wire up to the 5v from my pc power supply..so i installed that in my Yellow novagem button and now it lights up much more yellow and much less orange. i dont know if it quite as bright as my blue novagem now, but i figure the next time i need to order from GGG, i'll throw in a few white LEDs, but for now, i is much better than it was.
note to Randy T...perhaps yellow novagems should be offered with white LEDs as an option on your site. also, pics of all the different colors, lit and unlit, would have been nice so you could see what you are ordering. If i could have seen the way the yellow buttons looked when illuminated, i would have ordered white LEDs to go along with them.