[BUG] the colour is switched to the default when the themes are changed

[Dun-sin]

Description

This shouldn't happen, as users may not remember the colour they have previously chosen

Screenshots

No response

Additional information

No response

🥦 Browser

Google Chrome

👀 Have you checked if this issue has been raised before?

• [X] I checked and didn't find a similar issue

🏢 Have you read the Contributing Guidelines?

• [X] I have read and understood the rules in the Contributing Guidelines

Are you willing to work on this issue?

None