To the HUD. More customization is always welcome and OWL has a few more colors we don’t currently have available. We need more colors overall and this would be amazing. For example, I’d like a light blue tone for my hud, not the neon one or the ones we currently have. Our options are very limited!
More QoL ideas at:
Yes, please.
Many people have been wanting this for a while. Just give us a color wheel picker please. 
I’ve always wanted more colors than we already have! I think it would be nice to even add more colors to the crosshair.
I wish they could just add a colorwheel so you can customize and pick your own colors instead of having the basic ones to pick from.
Red will still be the best color either way unless you are colorblind.
The game is just designed with it in mind and using any other color that is bright enough to give advantage will mix up with other effects like healing