Same as the last big update to Windows 10, Anniversary, themes made on prior versions will not work on the Creators Update (and may in some cases break Explorer). Good news is third party programs used to change the start menu and taskbar color will no longer be needed, and custom accents are finally possible which is a d r e a m.
I'd love to have all my Visual Styles updated so they work on the latest update but it will definitely take time, as the only way I've found possible is with UltraUXThemePatcher and remaking the theme entirely from scratch.
Nocturnal (my bae) is going to be my priority to remake, I've already made
quite a bit of progress, but after that remaking the themes will be a v slow process.
Let me know if there's a Visual Style you'd want to see updated for Version 1703, as of right now I wouldn't be working on more than one at a time, and having an idea of which ones to start w/ would be v helpful.
And if anyone is interested in remaking one of my themes or helping out w/ doing so, let me know. โ๏ธ