[rxvt]

I've just started messing with oUF and Lua in general (although I know other languages which has kinda helped me wing it so far). I'm wondering if there's an easy way to reverse bar textures. For example: I want the target's texture to be reversed of the players. Is there an easy way to do this?

I've looked around to no avail (random Google searches didn't help at all either), sorry if this has been asked and I just fail at looking.