Hi All.
Hmmmm - Sorry wheelz, I don't think there's any such thing as a purple LED!
(not that I'm aware of anyway.)
Up until not long ago there was no such thing as white or blue LEDs either - only in the last few years.
White LEDs are possible, but OUCH! They're EXPENSIVE! (the white SMD devices in small quantities, anyway.)
Oh - one other thing...
Someone (can't remember who - sorry!!) gave me a link to eBay where some bloke overseas was selling quantities of 50 and up of blue surface mount LEDs for a fairly good price - anyone who might be tempted BE CAREFUL! I checked it out, and they're a different package type to the ones in use and likely won't fit as well. Also not sure about the dispersion angle either - often the smaller package devices have a narrower beam width, which could cause "dark and light" patches through the dials.
I could look into larger quantities of white LEDs if there's enough interest, but I already have over $600 invested in this, and I'm running out of money! :my:
Anyway, updates as they happen folks....
Cheerz!