There are some problems:

- It can't change context menu color.
- Exported themes can't be installed, Firefox says it is broken.

A workaround for sidebar text contrast issues when using dark theme.
:root {
color-scheme: light dark !important;
}

It doesn't play very nice with Vertical tabs, most presets are obv broken and making one from scratch is a real chore without previews.

Still does exactly what was on the tin at release though. No notes with conventional tabs. It's just a real shame.

edit: they fixed the saved themes tab issue!
Decent extension with pretty thorough customization but the saved themes tab is covered by the menu preview and I can only access it with uBlock's element zapper. Additionally, the background images are never displayed as they're shown in the preview and the 1mb limit is a bit difficult to work with. A zoom-to-fit or resize option for backgrounds would be appreciated. Would be a 5 stars if not for those QOL issues.

Assallamu alaikum , selamat siang perkenalan salam kita ketemuan jaga sehat disana , lebih baik senang bahagia diri hidup sekalian yaa ,,,

Extremely nice.

Confusing just at a first glance, but I didn't read any instructions yet.
IMPORTANT and helpful. I have had an unfixable problem with the icons for my addons showing up. Somehow, this addon fixed it! So I'm thrilled that I added it. Even after disabling and restoring my original theme, the problem stayed fixed. It would be really helpful if a developer could check on what this addon changed to fix that problem. I will check my about:config setting it to show only changed values.
I will be using this addon as soon as I have time to read all of the documentation.