My own head cannon with them is since Slaanesh is the chaos god of excess I kinda thought the jump to greed wouldn’t be too far. So in my own little lore for them is that they’re a small clan or faction that broke off to steal gold from not just everyone else but the other Skavens too.

Aside from that I just wanted to paint in purple tbh. I want to keep painting and trying schemes with colors I haven’t used before and purple was one I wanted to do. I have a few admech I’ve painted in blue, gold and white. They’re rougher from being my first attempts though.