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I used this theme for a few years - it's a great looking and nostalgic theme. However, it's pretty old now (the last release was in 2019), and as a result it doesn't have good compatibility with the new Firefox UI. The "Customise Toolbar" page is broken, displaying invisible white text on a white background. Also, several UI elements are not re-themed, remaining the default light or dark colour.

As much as I like this theme, I've had a better experience with other themes recently, and I think you will too (unless this theme is updated in the future).

Easy on the eyes and a lovely shade of blue. Perfect.

It sure is beautiful... and a mainstay, too!

Четко, контрастно, приятно глазу

So nice and clean, and also let my eyes rest.
I really like this theme, well done, and thanks a lot for making this.