"Locking" the Palette Editor

Hi! Just started Pyxel Edit and I'm loving it so far!  I do have a few problems though...

I'm using a tablet and  I find that it's far too easy to accidentally move things around on the palette editor when I am just trying to pick colors. I like having my colors arranged in gradient ramps, and it's annoying and frustrating when I accidentally knock something out of alignment... especially if I don't notice at first.