The normal color is white. I can change the color in creator via a stylesheet change. I want to change it to yellow if data stops coming into the plot and back to white when data is coming into the plot

but when I compile and run that color is not on the plot.

I've tried the palette method and the stylesheet method in code via a button push. The color will not change. Since I promoted a QWidget to qcustomplot does my syntax have to include those items. This one has me frustrated.

Thanks for any help

emp1953