(The bottom left was the color I recently lost)
http://puu.sh/mzYyd/932ccbab85.jpg
the flat colors I can deal with but the gradiant colors are a bit harder to get back. all it takes is a tiny flick to pick it up and drag them... even if your cursor is still on that selection save slot, it will just disappear as soon as you let go with the stylus or mouse. I have lost a handful of colors so far and now my favorite one is gone

Thanks for for taking the time and looking at this.