Source i (link to git-repo or to original if based on someone elses unmodified work):

https://github.com/witalihirsch/Mono-gtk-theme

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Available as/for:
Description:
Mono Project
Mono Project Online Preview

Support
My Patreon

Installation

GTK3 and Gnome-shell
Move theme folders to ~/.themes

GTK4
To install the Gtk4 theme move the contents of gtk4.0 to ~/.config/gtk4.0.

Flatpak
To install themes on Flatpak apps use these commands:
  • sudo flatpak override --filesystem=$HOME/.themes
  • sudo flatpak override --env=GTK_THEME=MonoTheme

or
  • sudo flatpak override --env=GTK_THEME=MonoThemeDark


GDM
IMPORTANT! Take a snapshot of the system before use!
If you want the gnome-shell theme to extend to the lock and login screen, move the gnome-shell-theme.gresource file from gnome-shell folder to /usr/share/gnome-shell/ with a replacement and restart system with ALT+F2 and enter r for Xorg or reboot/log out for Wayland session.
Command:
  • sudo cp gnome-shell-theme.gresource /usr/share/gnome-shell

I recommend saving the gresource file from the folder to a safe place beforehand, if will need to be returned. Go to /usr/share/gnome-shell and open terminal.
Example:
  • sudo cp gnome-shell-theme.gresource ~/Documents


Firefox Theme
Firefox Theme link
1. Go to about:support in Firefox.
2. Application Basics > Profile Directory > Open Directory.
3. Create a chrome directory if it doesn't exist or remove/move all files in chrome derectory if they exist.
4. Put mono-firefox-theme, userChrome.css, userContent.css in chrome folder.

Icon Theme
Icon Theme link
This is a mix of Adwaita symbolic icons and new icons that we made together with my friend. Icons match and don't get out from the style of Adwaita icons.
To install icons, place the folder in the ~/.icons directory and select icons in Gnome Tweaks. In order for icons to work everywhere, including for flatpak apps, go to the directory where you saved the folder and move the icons folder to /usr/share/icons.
Command:
  • sudo cp -r MonoIcons /usr/share/icons

If you don't want to use the default app icons, move the icons from your favorite icon pack to scalable/apps.

Using
To change the light or dark theme of Gtk3 apps and Gnome-shell use Gnome Tweaks or Night Theme Switcher (choose the theme you want in the Themes tab and change the theme color in the Settings > Appearance).
The dark and light appearance of gtk4 is changed by renaming the desired file to gtk.css in .config/gtk4.0 or you can try the script I made for automatic theme switcher in gtk4 and gtk3/4 flatpak apps. Go to Night Theme Switcher and select Commands tab and paste this script.
Sunrise:
  • flatpak override --env=GTK_THEME=MonoTheme --user & cd ~/.config/gtk-4.0 ; mv gtk.css gtk2.css ; mv gtk-dark.css gtk.css ; mv gtk2.css gtk-dark.css

Sunset:
  • flatpak override --env=GTK_THEME=MonoThemeDark --user & cd ~/.config/gtk-4.0 ; mv gtk.css gtk2.css ; mv gtk-dark.css gtk.css ; mv gtk2.css gtk-dark.css

Thanks to this script, you can change the theme of apps by switching dark and light theme in the settings, but gtk4 and gtk4 flatpak apps will be updated only when the app window is reopened. If ALL the steps are completed correctly, then the theme color will change for ALL applications in the system, write your questions in issues.

GitHub theme link
Last changelog:

MonoTheme 1.2

- Added index.theme
- Changed transition of windows (gtk3)
- Fixed transparent line under headerbar in Chromium (gtk3)
- Fixed transparent searchbar in gedit (gtk3)
- New bg color of buttons when focus (gnome-shell)
- Fixed missing hightlight color when searching like in Document Viewer (gtk3)
- New bg color for last-child button in modal dialog (gnome-shell)
- Fixed bug of titlebar in some non-gtk windows (gtk3)
- Fixed erroneous transitions of switch (gtk3)
- Added new Wallpapers for dark and light mode


Ratings & Comments

38 Comments

stvnthms

10 10 the best Great theme :)

hishtnik011

10 Great theme

spotless7359

Awesome theme! Could you share your font settings, please?

witalihirsch

SF Pro Display Regular 11

ruhart

9 Covers nearly everything perfectly and has a great aesthetic. Pretty new to Linux atm, so I'm not sure if this is due to user error, but the buttons in the Amberol music player in the top bar menu are all changed to ">". Easy to deal with, and could be because I'm using Gnome Tweaks to change the shell instead of the suggested installation method (I don't want to mess with Linux too much until I fully know what I'm doing).

witalihirsch

this is most likely related to the icon pack you're using and not the theme

fazer227

9 It's the best GTK-Theme, but can you change the icon of the app-grid-button, please. It looks like you have copied it from macOS and additionally it doesn't fit really well with the rest of the theme.

witalihirsch

thanks. this is a temporary solution for now, i've not made my own yet

witalihirsch

launcher icon changed

fazer227

Remove Rating

fblais

Only the Firefox themes were updated today? The other files are dated nov 24.

witalihirsch

yep, only for firefox

lvelazquez

9 Very very good theme, but I have a little problem in evolution, ma il list is reverse, I mean if the theme is dark the list is light and vice versa

witalihirsch

fixed

witalihirsch

it will be in the new release

fkorpsvart

10 10 the best

akahatoki

10 simple, minimal and clean, love how soft it looks to my eyes

edoard

A Kde/plasma pack theme, please...

witalihirsch

will be in the near future :)

melphis

10 This is what the default theme should be. It's perfect!

elmandelascaguamas

10 pls add whitesur titlebutton

witalihirsch

maybe i'll do it in the future

boogie-man

10 There is a bug. Black icons if the window is out of focus.

witalihirsch

fixed

Koletz_double

Ballon types in Floating Dock/Dash to dock is transparent. When window is open can not see correct labels in dock.

Pling
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license GPLv3
version 1.2
updated
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downloads 24h 4
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