Yesterday I saw somebody with a black eye, which reminded me how we use idioms differently. In English, people have a black eye but in German they have a blue eye (ein blaues Auge).
That gave me the idea for the following slide show. I hope I haven’t forgotten any interesting sentences or phrases with colours. If I have, please add them below.
EDIT 2021: In season 4 of Ask Angelika we covered lots of German idioms and what they mean. Check out the playlist which will have 26 videos when done: Ask Angelika Season 4