The cyan on black scheme in this theme is a well balanced contrast. You can tell the minimal/ subdued use of color is thoughtful so they're not distracting, yet give the eye a definite target to clearly see the UI elements without making them steal all the focus. The transparency on the menus is also well dialed in, so that you can easily read all the menu items. I'll definitely be keeping this theme in rotation. 21:9 support is not quite there yet, but future updates will most likely address that.