Hm, was sure you had that avatar before yesterday. Those caps are going to scourge your retinas before the LEDs. Little black beetles will love it though.
I put lavender WASD keys (but as the arrow keys) on my Realforce and sometimes I mistake the keys for being illuminated for a second before I realise that's stupid and impossible … Onset of senility I'm afraid. I'd prefer something more subtle, but keycap options for Topre suck.
I find that since the LEDs face the ceiling and not me, so long as I don't lean over the keyboard, it's no bother. Topre have set the LEDs much lower down in the Realforce and used light-diffusing plastic on top of that, so the LEDs are nowhere near as bad. As I've said before, I can stare into the blue LED of my display quite happily as, while it's bright, it's closer in intensity to a normal green LED. Dell's current keyboards also have blue LEDs that are darker than FILCO's green LEDs.
A quick search on the Internet indicates that you can dim an LED with a resistor (as opposed to pulse width modulation) so goodness knows why all these companies can't just slap in a resistor in the blue LED models – I guess even that level of customisation would cost too much? Surprised no-one actually sells factory-made No-Eyeball-Rape™ blue LEDs with an integrated resistor on the semiconductor. But then, in my Perfect World™, FILCO would use No-Eyeball-Rape™ blue LEDs for MX blue, orange LEDs for MX brown, and so forth … just can't decide on a colour for MX black :-/ (Leopold clears will take the white LEDs)