- Colorado School of Mines
- Colorado Springs
- Colorado State University
- Colorado Technical College
- Colorado Technical College
- colorant
- colorants
- coloration
- colorations
- coloratura
- coloraturas
- color bar
- colorblind
- colorbreed
- colorcast
- colorcasted
- colorcasting
- colorcasts
- color-code
- colorectal
- colored
- colored
- coloreds
- colorfast
- color-field