I'd say you did a fairly nice job capturing each of your snakesIf you have the option on your camera, do a custom white balance (on my camera, it's under the 'Function' menu). You'll usually want to photograph a gray card of some sort, and that usually helps balance out the colors
(making the red, green, and blue on a histogram centered). A few look a little overexposed, so choose a quicker shutter speed if you can.
All in all, you captured them wonderfully!!! That bee is just amazing!