The blue LEDs at Radio Shack were about 1.99 I think... Don't have the package anymore, so I don't know the mcd value, but anything over 1000 is usually visible in daylight! I'll get some more today, so I'll know later.
BTW, on Radioshack.com they've got white LED replacements for flashlight and automotive bulbs. I saw a set of solar Malibu lights at Home Depot yesterday using high intensity LEDs. I'd like to have some lightbulbs that didin't burn out in 10 years...