Skinstudio 11/Windowblinds 11 - can't change explorer background

So I updated one of my favorite skins with Skin studio quite a few versions ago but at some point it stopped applying the "explorer background"

 I'm trying to do it again and can't seem to get it to work.

What am I doing wrong or not doing that I should.

Please see screenshot

Reduced 37%

Original 1762 x 579

you can no longer do that in windows 10/11. I believe you can only change the color now.

Go to the Change Skin Colours section and use the top dropdown to select the area shown in this image, change the 2 colors circled in red. In that area also is a color listed as Window Background and it is best to leave that color as white as it effects many other applications, I do not recommend changing that color. Hope this helps.

ok, so you can only change the color.

Not use an image

Bummer!