I haven't used FTR in absolute ages. I did originally provide skin files, but somewhere along the line the plugin author said he would be maintaining them
If so, the skin author (PR) has not been logged in for a long time, so I wouldn't hold my breath.
I've been using many of PR's skins, and I've always enjoyed the combination of simplicity and functionality his skins provide. Sadly it seems that we might not see more of this from PR .
Luckily, there are many other good skins and skinners.