Color by residue

How about the ability to "color by residue" (for amino acids and nucleotides). This would be especially useful in teaching and visualization by students.

Also useful would be:
ribbons (or cartoon) view
ability to show "backbone" of a protein

Thanks for providing this app.

Byrne Pedit

PS: Looks like you're a Packer fan. I'm writing this from my home in Chico, CA. . . home of Aaron Rogers. Even though we teach at a competing high school, my wife and I have both become Cheeseheads.