Background color config option

[ASankaran]

I have a large QScrollArea (roughly 1800 by 46600) which contains a Graphics Layout Widget and I want the background color to be white with the foreground items being black. To do that I have the following two lines of code at the beggining of my program.

pg.setConfigOption('background', 'w')
pg.setConfigOption('foreground', 'k')

However when I scroll down in the QScrollArea the background for the Graphics Layout Widget background switches back to black about 3/4 of the way down.

Versions:

qt             4.8.7
pyqt           4.11.4
pyqtgraph      0.9.10