Well I won't be very much help right now, im dead tired and completely unfocused but I have some reference photos that you are free to take and may end up being helpful if you don't have any freestanding LED's near you.

The thing you have to remember about LEDS is that for the most part they are clear when not in use and the emitter is what provides color.
Anyways onto the link: LEDS
There are a variety of sizes and colors in my photos and in the rest of the set.
For example, the elusive UV led: