When comparing Flat Remix GTK theme vs Materia, the Slant community recommends Flat Remix GTK theme for most people. In the question“What are the best gtk3 themes?” Flat Remix GTK theme is ranked 5th while Materia is ranked 6th. The most important reason people chose Flat Remix GTK theme is:
The additional color options are all very well thought out, too.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Very clean look
The additional color options are all very well thought out, too.
Pro Good support for various DEs
Includes support for Gnome Shell, has a Cinnamon desktop theme, plus supports XFCE, Mate and all the usual suspects.
Pro Under continuous active development
Responsive and helpful developer.
Pro Customizable via Oomox app
Users can build completely personal version easily using Oomox Gui app.
Pro Corresponding theme for Qt/KDE
There is a corresponding theme for the kvantum-engine under Qt/KDE.
Cons
Con No Round Corners
Let's be honest Round Corners is a must addition in 2022.