Dried pink peppercorns can be found in some supermarkets and delicattessens. You can also buy them in brine. They have a delicate pepper flavour; just crush them in a pestle and mortar to get that ...
Green peppers are the most bitter ... a derivative of the Anaheim pepper variety. Try piquillo peppers, which work well as tapas, either stuffed with soft cheese or served with pan-fried slices ...