Description of the problem
The problem comes when you see your Issue tags are out of colors. They are just simple text.
- Issue list

- Single issue opened

Solution
To fix the problem, you have to go to Administration (on the top right corner) - Plugins - Tags Configure

Here you will find the Use colors option is disabled. Please make sure to Enable it and save the changes.

Afterward your tags will become full of colors.
- Issue list

- Single issue
