Why do you replace action icons instead of adding separate colorful icons for use in preference dialogs? Right now all action icons are "monochrome", making few of them colorful will introduce inconsistency.

In D24975#554721, @mglb wrote:

Why do you replace action icons instead of adding separate colorful icons for use in preference dialogs? Right now all action icons are "monochrome", making few of them colorful will introduce inconsistency.

Maybe I should have explained it in the summary. It's currently kind of impossible to have consistent icon styles at 32px in 3rd party apps and we'll be breaking compatibility with 3rd party icon themes whenever we add another preferences- icon. @ngraham and I have talked about this and we decided that it might be best to just make all 32px and larger icons use the color style. In order to fix the problem we have without changing breeze-icons, we may need a new freedesktop.org icon spec that is designed to handle the type of theme we have. The current fd.o spec works in a way that assumes an icon theme will have one style. GNOME gets around that by just naming some icons symbolic, but that means apps have to choose to use symbolic icons. If you want more time to discuss changes like these and find other solutions, that's fine with me. This patch doesn't need to be landed in a hurry.

I don't have time to do all 32px icons at once, but thankfully, they're usually only used in the desktop shell (I can put 32px monochrome icons in the desktop theme), or in preferences or navigation sidebars. I suppose it also affects people who raise the toolbar icon size to 32px, but I wonder how many people even know they can do that. I could just keep this diff unlanded for as long as it takes to convert all 32px icons.

In D24975#554805, @ndavis wrote:

I don't have time to do all 32px icons at once, but thankfully, they're usually only used in the desktop shell (I can put 32px monochrome icons in the desktop theme), or in preferences or navigation sidebars. I suppose it also affects people who raise the toolbar icon size to 32px, but I wonder how many people even know they can do that. I could just keep this diff unlanded for as long as it takes to convert all 32px icons.

That might be a good idea. We'll surely get bug reports about half-color/half-monochrome icons in apps that use 32px action icons for their own category switcher sidebars, like Okular: