Emperor tulips are 12-15 inches tall. Red Emperor is a fiery red. May Single early are fragrant, but you will have to bend over to reach the 10 - 18 inch tall plants. Couleur Cardinal is a dark cardinal red. Double early tulips resemble a peony at 10-12 inches tall.
All Gold is a deep golden yellow.
Tulipa praestans is 8-12 inches tall with multiple flowers per stem. Fusilier is orange scarlet. They come in many colors including bicolors. Darwin hybrids have large flowers on 24 inches tall plants. Flowers come in shades of mostly red.