In home page but also all background site.
The theme is donut.
you need to place your styles here -
somewhere you need to add the style -
choose your own color inplace of red .
Hope this helps .
Welcome to the Q&A site for Question2Answer.
If you have a question about Q2A, please ask in English.
To report a bug, please create a new issue on Github or ask a question here with the bug tag.
If you just want to try Q2A, please use the demo site.