UxStyle

[razorsedge]

About UxStyle is a bit of software that relaxes Windows theme signature requirements to enable third-party customization. Specifically, UxStyle consists of a tiny system service and a kernel driver that are loaded into memory where they hang out until reboot. No file system changes are made.
(First introduced on March 19, 2009.)
UxStyle was recently rebranded to UxStyle Community Edition and published to GitHub under the GPL license (https://github.com/riverar/uxstyle/blob/master/LICENSE).
Operating System Support

Windows codenamed “Whistler” (escrow builds)
Windows XP
Windows Vista
Windows 7
Windows 8
Windows 8.1
Windows Server 2003
Windows Server 2008
Windows Server 2008 R2
Windows Server 2012
Windows Server 2012 R2
Windows codenamed “Threshold”
Windows 10 Technical Preview

Preview: For Windows 10 Technical Preview (0.2.4.2 (https://github.com/riverar/uxstyle/releases/tag/0.2.4.2)) > https://github.com/riverar/uxstyle/releases/download/0.2.4.2/UxStyle_0242_x86_x64_preview.exe

Source http://uxstyle.com/