Since most of you liked the round metal buttons best, I "butchered" a coat which I didn't wear for more than 2 years. I originally bought the buttons for this coat as they were in bulk and cheap. The coat went to an recycling organisation, the buttons on to vest and shorts:
Now everything matches and it was already worn to my mum's birthday party last weekend and the bad taste fabric swatch!
* Reference to the Simpson's parody on "Hardest button to button" by the White Stripes