I'm colorbind, so in Beyond Compare's settings, I long ago changed the pastel pinks and blues to something more high-contrast. You might call it ketchup and mustard but I color-picked it from an abstract oil painting by Elaine de Kooning.
Below are two screens in the default BC colors and then two screens with my high contrast scheme.
Method 1: Use mine: (1) download the file below (2)
Tools->ImportSettings (3) browse to where you saved my color file.
Method 2: Roll your own. (1)search DuckDuckGo images for a nice image. Try searching "logo" or "color pallete" or "tartan". Then bring in the RGB codes using your own color picker tool and this part of the menu:
Don't have a color picker? Find the RGB values using the built in pixel analyzer in Beyond Compare PictureCompare!