Board Thread:Support Requests - Getting Technical/@comment-27079808-20190212045716/@comment-26402117-20190212081902

Look is controlled by CSS (wikis are websites too!), so you need to read the last link & 2nd last link I posted above.

Your developer tools will be useful also:
 * https://developer.mozilla.org/en-US/docs/Learn/Common_questions/What_are_browser_developer_tools
 * https://developers.google.com/web/updates/2018/01/devtools#overrides

If this is too complicated, you can change the title background & title text colors with accent source.