WhatsApp Web name accents are unthemed

### Is there an existing issue outlining your problem?

- [x] I am using the latest version of the provided userstyle.
- [x] I have searched the existing issues and they do not solve my problem.

### What userstyles are you seeing the problem on?

lbl:whatsapp-web

### Describe your problem.

the variables for the colored "name" accents seem to be unthemed. this can be observed by turning the theme on and off.
i have included screenshots of the unthemed website for comparison.

### Attach screenshots.

### What browser(s) are you seeing the problem on?

Firefox v142.0.1

### Any additional comments?

my guess is that the variables changed? i was able to get that the blue variable in the screenshot is `--wds-sky-blue-300`