How To request a new Skin

Steps

Open this link or click the "Request a Skin" option present in the header
Then Create a New Issue with title- Skin Request: Done!

How to enable bluring of background fo dialogs and episode previes for Firefox

Steps

go to about:config in firefox and click on "Accept the Risk and Continue".
Search for layout.css.backdrop-filter.enabled and change false to true.
Search for gfx.webrender.all and change it to true. Done!