ok. thank you for approving this, i thought about that because i tried everything i could find about background.
cant use xnview then, because in whitescreen the green and yellow lighted lines in my drawings are almost not noticable.
sad
i tried method A and Method B. and bot are not working for this. just to make clear i am not talking about any .PNG files i am talking about .wmf (Windows Meta File).
https://abload.de/img/dddrcsxu.png
just set it to green for test. as you can see its for ...
how do i change the transparency background of the viewer (standard) to a color of my choice?
I do not want to change any graphic file, i just want to have the transparency showed in another color.