I'm using org-mode in Spacemacs. In my org agenda, open items (TODO, QUESTION, ...) are purple, while closed items (DONE etc) are green.

I export my calendars to org-mode, with timestamps and the CALENDAR keyword. I would like to be able to tell at a glance which items are calendar items, because these are different from open as well as closed items. Can I somehow customize the color of an item - not the keyword, but the rest of the line! - depending on the keyword?