Don’t know where you live, but the statement that “they are always orange” is NOT TRUE. Perhaps you live in a small town served by only one ready mix supplier and their trucks are orange, so you have no other comparative source. In just about all major cities, ready mix trucks come in all colors and color combinations. In Houston, just about every color imaginable you will find on ready mix trucks with the truck color denoting the name of the supplier. There are over 50 ready mix suppliers in Houston and therefore you will se over 50 color combinations.