Hi,
Depending on the size of your database and the location of the colors:
1) We can make a backup of your database.
2) Look for all the table(s) that specify colors.
3) Write a short php script that capitalizes the first letter of color words.
4) Tasks 2-3: Depending on the structure of your database table(s), I'm not sure if you're wanting a developer to just add records or if you're wanting table structures altered. In either case, the tasks are easily doable.
You can view my profile for a link to my portfolio. If you have any questions, please let me know.