P: Ability to change the interface background color

my current workaround is exporting with a white background which is found under the share feature. I don't even actually export it. I just look at what it looks like in the little preview, and I can kind of judge if the photo is bright enough against that white background or not But I agree with your sentiment 

Must give up using lightroom - my eyes just cannot cope with dark mode. Why can you not provide such a simple feature?

Upvoted - new Lightroom user posting to Instagram, really disappointed in the results - Lightroom has a great suite of features but when uploaded to instagram, my pictures look dull and flat - being able to edit with a true white environment would make such a difference to this.

After seeing the lack of support for a basic feature requested over 6 years ago, it has persuaded me against paying for the subscription.

I'm sure there are many others who have experienced this, who haven't bothered to find the forum, add an upvote, and a comment - this must be the tip of the iceberg!

Please support changing the background color from black to white, similar to the desktop version. Editing on a black background can make a photo appear too dark, as there’s no white color for reference.

Super silly solution

invert colors on device settings and then flip the curve in edit like your doing a negative. When your done with the batch just export as png or whatever you use and import the new file and flip the curve again because everything is now inverted. As usual contrast is the only non inverted thing.

Absolutely agree, I am also missing this very basic feature.

I've been working on some night scenes lately, and find cropping certain images very frustrating: I can't see the edge of a pitch black horizon against the black lightroom background. It would be nice to be able to switch from a "light mode" and a "dark mode" 

I think I have found a trick, that solves this problem, at leas for me. When a picture is open, tapping on the share icon, there is an option 'Add border and share'. This will show you a preview before actually sharing, where you can adjust the color and thickness of the border. And voila, you can see your image with a white background, of course, by these extra steps. I hope this helps some of you.

I think an important addition here is that now that Lightroom supports HDR editing, it's incredibly useful to use a white background to have a baseline for "SDR white." Adobe's own blog post introducing HDR editing in Lightroom suggests this as a technique for judging if you've gotten too far into the HDR realm ("white surround"). Given that recent iPhones, at least, pretty much all have screens capable of multiple HDR stops, it seems silly to not have this as a mobile option. The mobile app supports HDR, and Adobe says it is useful to use a white background to edit HDR. So...

Personally, the most HDR-capable device I have is my phone (MacBook Pro M1 can go to 1 stop; iPhone 12 can go to 3). If I'm going deep into HDR, I need to move to my phone to check/edit things for at least part of the time.

This was 7 years ago and Adobe still does not care.