Hi Damien,
I'm trying to locate the Color Libraries and Color Themes tools. According to the tutorial I was watching and according to Adobe's Photoshop CC help video, Themes should be under Window > Extensions and Libraries should be under Window. Neither of them are there! How did I manage to mess up the menu and how can I fix it? Or if not, how can I find these two tools some other way? Thanks so much! Screenshot of my incomplete menu: