69 340 4-speed

My 69 swinger has turquoise 340 block from factory.I was told that 340s could also be blue or red blocks.Maybe it depends in what plant it was made. My swinger was Hamtramck plant but I think some were made in LA?My car does not have fender mounted emblem.That is a sweet car.I know of an original F6 mod top car up here in Canada.