I'm sure there probably is, anything is possible. But that's not something us users can do. The devs would have to implement that.
I'm not a programmer, despite the 4yr degree on my wall saying differently, I just only go as deep as I have to to get the desired result. Which in this case was get rid of the purple.
If you want to help, I don't know how skilled you are with app development but my next idea was to use Android Studio to decompile it and make some real modifications, not just the colors.
But my computer is a giant steaming pile of dog shit, and I don't think I have the resources to do anything other than get pissed off at this giant steaming pile of dog shit

