Rave tweaks: change the look of the hands, fix screen-darken
Screen-darken is now a simple fullscreen draw
Leap hands are now visible and match body lighting
Fingertips are hidden and hand coloring matches body and arm
"fake hands" aren't active unless they're chosen from the Debug menu.
Merge pull request #807 from machinelevel/dev4

Rave tweaks: change the look of the hands, fix screen-darken