I think this was aired on an earlier thread but yes, it is really off putting - at least I find it so. A friend stayed in a Cotswold town for a week and her food was served on trays most evenings - this in several different restaurants too - and one night the tray was metal, stone cold, and consequently so was her dinner. We had a meal in a restaurant in Portugal and our food was on wooden platters which made me think about the scratches and grooves, but one of our party had his chicken served in a piece of terracotta guttering! I do agree - plain white plates make a meal look appetising and colourful. Assuming it's not rice pudding or just mashed potato!