Use glColor instead of mkColor to set GLViewWidget background color.
Use glColor instead of mkColor to set GLViewWidget background color.

benvermaercke/pyqtgraph,ericdill/pyqtgraph,petebachant/pyqtgraph,pmaunz/pyqtgraph,benvermaercke/pyqtgraph,mgraupe/acq4,derricw/pyqtgraph,nmearl/pyqtgraph,stscieisenhamer/pyqtgraph,pmaunz/pyqtgraph,ng110/pyqtgraph,pbmanis/acq4,meganbkratz/acq4,ng110/pyqtgraph,ericdill/pyqtgraph,mgraupe/acq4,nmearl/pyqtgraph,JenSte/pyqtgraph,mgraupe/acq4,acq4/acq4,mpvismer/pyqtgraph,campagnola/acq4,mgraupe/acq4,ericdill/pyqtgraph,petebachant/pyqtgraph,stscieisenhamer/pyqtgraph,campagnola/acq4,mgraupe/acq4,meganbkratz/acq4,duguxy/pyqtgraph,pbmanis/acq4,pbmanis/acq4,mpvismer/pyqtgraph,pbmanis/acq4,acq4/acq4,derricw/pyqtgraph,duguxy/pyqtgraph,acq4/acq4,JenSte/pyqtgraph,benvermaercke/pyqtgraph,meganbkratz/acq4,campagnola/acq4,acq4/acq4,campagnola/acq4,meganbkratz/acq4