Why do some macOS folders turn blue and never turn back?

Question

Weirdo · Accepted Answer

It's usually not broken — the folder got a color tag or a custom icon. The color is an annotation added on top; remove the annotation and the folder goes back to normal.

Finder tags wrap items in a ring of color, and some sync or archiving tools swap in their own folder icons. Both are just clothing hung on the folder — the contents are untouched.

Right-click the folder and remove the tag; for a custom icon, open Get Info, select the small icon in the corner and hit delete. If it really won't go back, a sync tool is usually re-applying the makeup every time.

Why do some macOS folders turn blue and never turn back?

Where the blue comes from

How to turn it back