Third party icon packs can't theme minimize, maximize & close buttons of gtk3 apps when using Mint-Y theme

[HamzehTamimi]

Here is example of themed buttons on some apps:

But on ther apps it is not themed:

The cause of this is a line in /usr/share/themes/Mint-Y-(Whatever viariant)/gtk-3.0/gtk.css

-gtk-icon-theme: "Mint-Y";

in:

headerbar button.titlebutton.minimize,
.titlebar button.titlebutton.close,
.titlebar button.titlebutton.maximize,
.titlebar button.titlebutton.minimize {
-gtk-icon-theme: "Mint-Y";
background-color: transparent;
background-size: 18px 18px;
background-position: center;
background-repeat: no-repeat;
border-width: 0; }

[mfreeman72]

@JosephMcc Would there be a way to add a forced theme option to window theming for window widgets?

The reason I think it would be ideal for it to be an option, switchable in settings: It would seem that the person who posted this issue would like to have one window theme and a different icon theme, and have the window widgets follow the icon theme rather than the window theme (@HamzehTamimi, please correct me if I'm wrong on that). However, I have the exact opposite problem, where I want to use one window theme (Mint-X) and a different icon theme (Mint-Y), but I want the window widgets to follow the window theme and not the icon theme. Especially in the case of using the Mint-X window theme, the Mint-X icon theme widgets were specifically designed to match the window theme, but the Mint-Y icons were not, so they look out of place on the window.

What I've done as a (hopefully temporary) workaround was to make my own franken-icon pack, adding the Mint-X widgets to the Mint-Y theme in my ~/.themes folder, calling it Mint-XY. But that's not ideal, because I have to redo that work every time the themes get updated.

[JosephMcc]

I highly doubt there would be any interest in adding that. That's the type of very particular option that Cinnamon is really trying to stay away from. It's really up to each theme how it want's to handle this.