Created attachment 665073 [details]
All buttons in header toolbar are monochrome except the Tag button. This button looks like an alien to the others.
Created attachment 695304 [details] [diff] [review]
Use a SVG image like the other buttons.
Created attachment 695315 [details]
patch in action
Comment on attachment 695304 [details] [diff] [review]
Looks good based on screenshot and code diff.