fix: should be colorful icon if theme unclear on linux

[detiam]

Description

Сurrent icon looks very bad in KDE Plasma with a light theme.

Related Issues

Related to #1563

Checklist:

• [x] Have you checked to ensure there aren't other open Pull Requests for the same update/change?
• [x] Have you linted your code locally prior to submission?
• [x] Have you successfully ran app with your changes locally?