Theme looks nice, but please dont use too dark titlebars with no light/border/gradient at the top. If you have two titlebars slightly overlapping, with dark themes (such as Adapta) its very hard to distinguish where one titlebar ends and the other starts. The Pop variant of Adapta works better because it has a slight ‘shine’ near the top of the titlebar. With lighter themes its less of an issue - as the shadow helps to distinguish between two windows.
So, if it has to be dark (and Ambiannce’s dark title and header bars are nice), then please either add a slight ‘shine’, gradient, or some other means to distinguish between titlebars of applications. This is also an issue with two unfocussed windows - so you can’t just use different shades for focussed and unfocussed.