Welp, thanks anyway. Just curious though, why not distribute a copy of the code to paying customers so they can implement more niche skinning techniques relevant to different systems? I feel this could legitimately be profitable for Stardock, if fans of the code to look through and make their own revisions to it, as well as perhaps submit the revisions to Stardock if they seem to improve processing efficiency? At that point it would still only be accessible to paying customers and if they did something that messed up their own computer, that's on them. Stardock would have submitted working code.
I am afraid it doesn't work like that. Stardock are in the business selling software. Giving away the code to someone who gave us $10 doesn't exactly sound like a strong business strategy as you can bet anything added in say a WB11 would be back ported for WB10 customers by someone and probably the code would end up being "Bob's skinning app", "Kim's skinning app" etc.
In the future it is reasonable to assume a future version of WB will treat Brave the same as it treats Chrome/Edge but I cannot say when this would be.
If the rename didn't work then I would check that 1) the browser is running as chrome.exe and 2) That WindowBlinds has been told to allow it to skin in the first place (WB settings, advanced under settings on the left and at the bottom there is a setting to allow WB to skin chrome.) That defaults to off.