dark color theme has missing colors

[D4ntin]

• [x] I am on the latest ActivityWatch version. Actually I'm on the latest prerelease v0.12.3b15
• [x] I have searched the issues of this repo and believe that this is not a duplicate.

• OS name and version: Arch 6.6.3-arch1-1 x86_64 GNU/Linux
• ActivityWatch version: Prerelease v0.12.3b15

Describe the bug

The dark mode theme is using default 'light' mode colors in some spots throughout the application.

To Reproduce: Timeline

1. Go to Settings -> Theme
2. Enable dark mode
3. Go to http://localhost:5600/#/timeline Timeline
4. Click on Filter
5. The Filter button background has a light background (should be dark)

To Reproduce: Stopwatch

1. Go to Settings -> Theme
2. Enable dark mode
3. Go to http://localhost:5600/#/stopwatch Stopwatch
4. Enter a project name and start the stopwatch
5. Hover over the entries in the Running and History lists.
6. The :hover color of the entry has a light background (should be dark)

Expected behavior

The above mentioned elements should have a dark background color when using dark mode.

[github-actions[bot]]

Hi there! As you're new to this repo, please make sure you've used an appropriate issue template and searched for duplicates (it helps us focus on actual development!). We'd also like to suggest that you read our contribution guidelines and our code of conduct. Thanks a bunch for opening your first issue! 🙏

[D4ntin]

I just realized that this issue should be in aw-webui. I opened a new issue there. Sorry.