change calls to get/set FeatureColor to get/set FeatureProperty, fix colorpicker issue
change calls to get/set FeatureColor to get/set FeatureProperty, fix colorpicker issue

AliTVTeam/AliTV,BioInf-Wuerzburg/AliTV,BioInf-Wuerzburg/AliTV,BioInf-Wuerzburg/AliTV,BioInf-Wuerzburg/AliTV,AliTVTeam/AliTV,BioInf-Wuerzburg/AliTV,BioInf-Wuerzburg/AliTV