Hi Jerry, if you're still around. I know this post is 7 years old. I came here when I did a search for "Turn off annoying highlight following folders in Windows 10". I tried your themes in Windows 10, following the instructions to copy them into C:\Windows\Resources\Themes, but they didn't work. I did see Windows Explorer refreshed, the screen flickered, and my desktop background returned to the Windows default, but alas, no transparent highlight or red and blue thin lines.
The Style Builder website still exists but doesn't seem to have been updated since 2009. I don't see a Windows 10 version.
I tried changing MouseHoverHeight and MouseHoverWidth to zero in HKEY_CURRENT_USER - Control Panel - Mouse and rebooting, as was suggested on another website, and that didn't work, either.
In Xplorer2, you can click on Tools - Advanced Options - Global - select "Disable some Vista effects, e.g. highlight of item under cursor". This has the effect of your transparent theme. I'm trying to find another way because it's a company laptop.
Do you know of any way to change the highlight to transparent, or thin red and blue, in Windows 10, besides purchasing Xplorer2?