I downloaded and installed on my local site yesterday and was happy with the results...really awesome add-on!
I was able to muddle through color and arrow changes fairly easily as well.
So now in the cold light of day I'd like to make a change that i can't seem to figure out. I currently have the categories background set to transparent but would like to add a background color for the cats when cursor passes over them (Hover).
I played around on my local site and can't seem to figure it out.
I do have it installed on my live site now as well.