Windows 10 introduced a system-wide accent color system that automatically applies a custom color to many parts of the UI including third-party apps. Unfortunately, only apps made for the Universal Windows Platform benefit from this feature while desktop apps are limited to the same color scheme since Vista.
Accent Applicator is a small program for Windows 10 that applies your accent color to some UI elements in desktop apps by updating System Colors (i.e. the theme colors used by desktop apps) based on your accent color. These changes are usually subtle, but they contribute in reducing the disparities between the classic desktop environment and Universal apps.
This program is published under the MIT license.
This app is no longer being developed. As a replacement, you may use AccentColorizer.