I really like this. Good contrast, keyboard navigable, and there are just far too few light but not glaringly all-white themes out there. These days my eyes crave consistent light levels when switching (meaning light mode themes, realistically), but they need contrast too.
(... I miss Mediterranean Nights and medium greys ...)
It'd be OK to add shadows behind windows. I am old, and I remember when Amigas and Macs started doing this
I could tell it was from the same maker as Skeu almost by looking. I love that theme too. Flat themes are a usability disaster and need to be stopped, so keep up the good work! It's nice to see something that treats UI as an expressive language that lowkey explains how it's to be used as it all unfolds and happens.