There are absolutely solutions that do exactly that client side (just mapping the colors from the hard-to-tell-apart hues to other hues depending on which type of color blindness).

For instance, in Mac OS, under Accessibility there are 'Color Filters' with a dropdown for presets for a few common types of colorblindness including red/green. It is a filter that is applied systemwide at the graphic output level.

I think this is the proper approach (device-level color filtering) versus each app attempting to serve all, as that could lead to double-filtering.