This is something we can see to once the new theme is applied. A template to do this on desktop will be no problem. For mobile though there's no way to avoid a white background so these pages should already look pretty bad. We might have to do away with plain white images entirely.

There has got to be some workaround.

I think I am just going to do the converting now. It is tedious.

Oh I can get some scripts together to do it later. But if you want to try your hand feel free!

I got the units. They were the most urgent. Those images are some of the first ones I uploaded to the site. They aren't even labeled (CivBE).png at the end. The buildings, wonders and the tech web are significantly easier because they do. I will leave it in your capable hands to finish the rest of them. It is less urgent to change them because while they still can't be seen on mobile sites, all incidents of their uses are behind dark background infoboxes and tables.

Also there are white transparent icons on Starting a new game (CivBE) are slightly more visible with white backgrounds, but if you can get a script to do them, go for it.

Made a to do list on my page.

I see you went with a black background, not a bad way to do it if we give them a nice frame everywhere. Well done.

I tried a different strategy with the tech web. It works well because the tech web is all in circles. I think the buildings however should be done in the same way the units are. Or you could make the background the color of the Infobox. that could also work. Unfortunately, I Spilled water on my laptop. It is under warranty. but I won't be able to edit much for the next few weeks. Well best of luck to all.

Computer is finally back. I know civ 6 is the priority, so I guess I will do the rest.

Yeah sorry to say I don't have that much time I can spend on the wiki right now, and in that time Civ 6 does take priority. You've been doing pretty great though!