Yes, I did and to be honest, best way is the latest updates option, because after page 4-5 (35-50 themes) you might as well give up finding a Windows ready 8 or 8.1 theme.
Only the recent updated sometimes say they are 8.1 compatibel.
I downloaded WB when I was still on XP, about 4-5 years ago, can not remember ever paying for it, but did pay for some themes, still in my account.
I did not mind to pay the $9.99 for WB, just did today, but keep on track and make search easy for newbies and existing customers.
If StarDock and WB and Theme Designers are to lazy to update their theme or text/explanation, well their problem when somebody wants to do a search.
Be honest, most themes used are only from the same always top 10-20 Designers, whom have free and paid themes.
Work with it or not.
When still on XP as I mentioned before I gave up on WB, I even deleted the install file, when I got this new computer.
Maybe I shouldn't have, then I might not had to spend $9.99 again today.
STARDOCK and WINDOWBLINDS are providing a paid service so stay up to date or make all free