I cannot seem to change the wallpaper color with windowblinds installed. It shows the change but reverts back to a steel grey color on reboot

I have chosen not to apply the wallpaper that comes with a windowblinds theme as i want to display a centered picture of my sister against a pink background. I choose the color of the desktop but on reboot the color is gone (and replaced by a steel blue gray color) but the image wallpaper centered is there

Uninstalling windowblinds solves the problem thereby proving that its got to do with WB

Any workaround?