What color should I overlay this image with

[Boxy]

I want to overlay this image with a color, so the stick figure won’t blend in to the background. Can I some suggestions on what color it should be?

[lukeo25]

One of the best websites for learning about color theory is “Color Matters” (https://www.colormatters.com/color-and-design/basic-color-theory). This website provides comprehensive information on color theory, including the basics of color, color psychology, and the use of color in design and art. It’s a great resource for both beginners and professionals interested in understanding how colors interact and affect perception.

[Donut]

I think purple would look cool