- Colorado Mountain College-Spring Valley Campus
- Colorado Mountain College-Timberline Campus
- Colorado Northwestern Community College
- Colorado potato beetle
- Colorado River
- Colorados
- 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