Grad Party theme

Hey y’all! I graduated college last year, but of course the ceremony was cancelled due to covid. So my ceremony was rescheduled for next month, and now that vaccines are widely available, I wanted to have a small grad party. For a theme I was thinking everyone can pick one color and wear an outfit made up of that color only! I know its not much of an actual theme, but thought it would be fun. What do y’all think? Should I go back to the drawing board?