Improve generation of color variations.
Improve generation of color variations.

As the size of the variation increases, the resulting colors approach
white and black. To avoid this we now reset the variation when it gets
too large. This results in repeated colors, but that's much better than
a list full of whites and blacks.

saike/flot,soenter/flot,resnick1223/flot,gdseller/flot,chaveiro/flot,petrvacha/flot,resnick1223/flot,trask/flot,colinhunt/flot,chaveiro/flot,stanislavdavid/flot,stanislavdavid/flot,mlitwiniuk/flot,mlitwiniuk/flot,saike/flot,cipix2000/engineering-flot,flot/flot,chaveiro/flot,Ninir/flot,saike/flot,chiu/flot,soenter/flot,Ninir/flot,k-joseph/flot,ni-kismet/engineering-flot,fashionsun/flot,TrainingPeaks/flot,resnick1223/flot,cipix2000/flot,octavianCraciun/engineering-flot,matong/flot,kongx73/flot,andig/flot,andig/flot,stanislavdavid/flot,pepperdata/flot,lolifans/flot,k-joseph/flot,wet-boew/flot,MAMISHO/flot,sedran/flot,magora-suchkov/flot,andig/flot,Sensirion/flot,cipix2000/flot,mlitwiniuk/flot,wet-boew/flot,mcanthony/flot,chiu/flot,klarkc/flot,chiu/flot,k-joseph/flot