change color of regulation temp box

[gitj]

if the regulation temperature has been changed by the user, but the "update setpoint" button hasn't been pressed, then the color of the box should be changed until "update setupoint" is pushed. use code like this to change the color (need to adapt to PyQt)

QPalette pal = myComboBox->palette();
pal.setColor(QPalette::Base, pal.color(QPalette::Window));
myComboBox->setPalette(pal);