Upload & Sell: Off
Nice work, Mark. We're doing a Rockies trip this summer and I can't wait.
As for the color management thing...
If an image has a profile, Safari, Firefox, and Chrome all display it correctly by default. (I'm on Mac 10.7 Lion, FWIW.)
If the image has no profile, all 3 browsers send the colors straight through instead of converting to your monitor space—analogous to assigning your monitor profile to the pic in Photoshop. If you're on a wide-gamut monitor, you'll get that nuclear look.
In Firefox, you can fix this (see below), but not in Safari or Chrome. Here's the setting (yes, still applies to current version):
Additionally, Chrome can't handle v4 profiles.* Safari is fine, and Firefox needs v4 profiles enabled (in about:config, make "gfx.color_management.enablev4" = "true"). Go here and see what you get:
OK, enough color nerd stuff!
*I don't think there are many out in the wild, but that's just a guess.