Change Photoshop GUI Theme
Since CS6, Photoshop supports four Graphic User Interface styling – that is: the interface color – from light to dark: Original, Light Gray, Medium Gray, Dark Gray. Theme Switcher is a handy extension with a minimal interface that lets you cycle through them with one click only (no need to dig in the Preferences anymore).
By Davide Barranca.
Theme Switcher (1.0.1)
FreewareGet it on Adobe Add-ons Photoshop CC/CS6 - Mac & Win