Options for viewer pane alpha channel?

Hi, are there any plans to add more options for the background of the viewer pane? Having a solid fill is ok but simple colors like white, black, grey, etc can cause confusion between files that may or may not be transparent. The alternative is to choose an uncommon color but it gets a little tired looking at images on a bright green or purple background all day (and doesn't completely eliminate the possibility of the first issue).

It would be great to have an option for a checkerboard or something similar to indicate transparency. Just wondering if this is anywhere on the dopus roadmap, thanks!

In Opus 13, F3 will toggle between white and black backgrounds, to check how images look on both:

viewer_bgcol_dark

You can also change or add additional colors by editing the hotkey.

There isn't a checkerboard option but we'd like to add that in the future.

Ah, I've not yet tried out the 13 Beta. Good to know! Thanks Leo