Music toggle for character creator/costume editor

[biostem]

I think this is a fairly simple suggestion - I can sometimes spend large swathes of time with the character creator/costume editor running in the background, while I'm working on other things around the house.  Instead of having to completely turn off the sound to the game or turn my computer's volume down/off, would it be possible to get some sort of music on/off toggle for said character creator/costume editor?  Thank you for reading!