About those pink / blue / green triangles next to folder names

[gpl]

I like them very much and I brought them naturally in a systemized order. Every folder of my 6 addresses has a specific color. The exception are the POP addresses. There you can customise only the folder for incoming mail.
Is that intended, or even necessary? Or have I once more choosen the wrong way to get that done...
Götz

[Kostya Vasilyev]

The triangles only show for folders that sync with the server. It's an additional indicator for which ones do and don't.

Besides, I don't see anyone getting lost in deleted / sent / drafts in a POP3 account, but maybe that's just me...