One of my favorite pokemon types is dark and ghost (i.g., haunter,muk,gengar) and favorite pokemon mewtwo. This theme gives me that feel.
Use it when I want to feel energy but also be able to concentrate.
The icy blue also helps blend in the tabs in the background yet the tab title text is easy to read. Good choice of colors for this theme.

Great purple theme! Goes well with my desktop theme, but I feel like it could be better if tabs area had a bit more brightness and contrast, right now it feels like an off-focused window.