Wow! Almost a year since I posted here.. I need to post more often. 

Here's my latest project... 

I am considering using LEDs to light my structures, off of the dc side of a standard powerpack of ~14v. (I use DCC for track). I am curious of what color leds work well for you. Regular yellow ones from Radio Shack don't appear to produce a pleasing color, although I have not actually put one in a building yet. If anyone has been down this road, and can point me to a source and also what resistor you used, I would appreciate the advice.

Thanks, Kyle