2. color type - regular colors are usually less intense than metallic and dragons.
Even irid dragons show different intensity - first picture from first group vs first picture from second group are examples of different type of irid. The second one is a dark irid, looks to have black in them while the first seems black free. . . . maybe have blond genes.
Second in second group looks like regular color and third looks metallic, not dragon. The two colors are rather dull. IMO it's their nature.