When comparing Elegance Colors vs Paper, the Slant community recommends Elegance Colors for most people. In the question“What are the best gtk3 themes?” Elegance Colors is ranked 18th while Paper is ranked 19th. The most important reason people chose Elegance Colors is:
There is a PPA available for Ubuntu users, which makes installing a breeze. sudo add-apt-repository ppa:satyajit-happy/themes sudo apt-get update && sudo apt-get install gnome-shell-theme-elegance-colors
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Pros
Pro PPA for Ubuntu
There is a PPA available for Ubuntu users, which makes installing a breeze.
sudo add-apt-repository ppa:satyajit-happy/themes
sudo apt-get update && sudo apt-get install gnome-shell-theme-elegance-colors
Pro Changes color
Elegance Colors can change it's Gnome Shell theme colors in accordance to the users GTK them, wallpaper or a user defined color.
Pro Flat and colorful design
The look of this theme is inspired by Material Design.
Pro Does total makeover of your computer
It's a complete theme, with custom icons, GTK, cursors, Gnome Shell.
Cons
Con Outdated
The theme project has been abandoned and there has been no activity for the past two years (the last commit was in May 2015).
Con More involved to set up than other themes
Users need to run a command to run a process in the background for the theme to work correctly, which may be more involved than what users are typically looking for in a theme.
Con Doesn't work
Doesn't install and doesn't work.
Con There is jumpy behavior when switching from window to window
You can notice jumpy behavior when switching from a forefront window to window behind it. Both windows jump a little which can slightly disrupt normal working flow.