Out of 16 pedals I only have one with blue LED's and while I may not stare at it, it is coincidently the only pedal I regularly change the settings on (pitch shifter/harmonizer) and when that little blue light is on I cant see the settings. Even the two knobs next to the LED are blurred out by the light.
You don't have to look directly at blue LEDs.
Just having them illuminated while I'm looking down to switch an effect on or off is enough to realize how irritating the blue laser pointers built into my pedals are.
And you don't stare directly into the sun while you're driving, but you still put the shades down.
Edit:
And from walterw's link:
"The Purkinje shift also noticeably brightens blue or green lights in our peripheral vision under medium to low light conditions, because there are comparatively more rods towards the edge of the retina hence complaints that blue LEDs are distracting even when they're not the focus of attention."
Fair enough.
FWIW: I've been annoyed by the white LED on my Utter Stutter,...but not enough to do anything about it.
