I'm Trying To Find Detailed Pictures Of Snakes Native To Eastern Colorado. I've Seen Two Different Ones In The Last 3 Days. Where Should I Try On The Web? I've Just Spent An Hour Searching.

Here is a link to Colorado snakes.  The first page is plain snakes, but you can also click n three other links on the top left of the page to see other-patterned snakes.  This should help you identify the snake you saw. 
 
Here is the link:
 
http://ndis.nrel.colostate.edu/herpatlas/coherpatlas/
cdow_herpetofaunal_atlas_species_snakes.htm
 
I am sorry,  the link will not paste properly here.  I will leave in your shoutbox on your profile page.

This is a pic of a coral snake...very dangerous!

You can do a search for Poisonous and Non-Poisonous Snakes of Colorado, and it should give you several links, you want to pick the one with the most descriptive details, that provide images and descriptions of where they can be found, etc.  Good Luck.