You could get quick access to the backdrop setting using Devolution. Should be pretty easy to use one of the custom buttons on the palette for this (just need to be sure the stack with the image is loaded into memory I guess).
Also, not sure the demo works as expected. The image seems to be 8x8 which would be a cross platform valid size. I added a 10x10 image, made the edges green. When set as the desktop, there are black lines surrounding the green. This happens all the way up to 15x15. As soon as I make it 16x16, then I can eliminate the black outline. I performed the test on Win10 using DP8.
Textured Backdrops
Moderator: Klaus