If a purple succulent leaves is desired, buy a succulent with purple leaves. There are loads of succulents in a variety of purple colors.
I don’t have purple succulents. When I brought the Echeveria Black Knight home, it was more of a reddish purple, natural, and beautiful. It has been living in the garden since July 2017. The color changes with the amount of light that it receives.
Much better than peeling paint.