Since it isn't possible to directly embed the feedback system into a website, it would be nice if we could do an image for the background in order to make it look more directly integrated with our website.
Is it ready?
Yes, it was done 8 years ago as you can see by the topic's status. Actually here is much more customization options for now.
Custom background in our plan
also with custom fedback page colors
We inform you in this topic when features willbe ready