[BUG] Changes to Dynamic Theme get reverted/deleted

Describe the bug

When I use DR’s dev tools to modify the default Dynamic Theme, the changes get reverted.

Steps to reproduce

• Set Firefox to delete all items (cache, etc.) on close
• Disable syncing DR dynamic theme updates
• Using DR dev tools (v5 preview), add CSS rulesets to the * section of the dynamic theme
• Close Firefox
• Reopen Firefox
• Inspect the DR dynamic theme

Expected behavior

Changes to dynamic theme not lost

Actual behavior

All changes to dynamic theme get reverted

System Information:

• OS: Windows
• Browser: Firefox 83
• Dark Reader version: Version 5 Preview (4.9.26)

Additional context

Although this looks like a bug, it could possibly be an unintended consequence of not conveying when (and why) the dynamic theme would get reverted.

The bottom line is that I would like to be able to make changes to the dynamic theme and not lose those changes. I have not submitted these changes to be applied to all Dark Reader users because they may only be applicable to specific OS themes, and possibly only specific browsers. The changes involve modifying the CSS for all input, select, and textarea HTML elements. For example:

input, select, textarea { color: var(--darkreader-selection-text) !important; }

[Gusted]

See #7359

[Gitoffthelawn]

As I jokingly say to a good friend of mine, “Your issues have issues.” 😃