basecolorOriginal Hair which is why the two lengths turn out different when dying, different base colors… left is 18 in & right is 9 in 
ruby-redRuby Red left is 18 inches long and right is 9 inches long.
deadly-nightshadeDeadly Nightshade left is 18 inches long and right is 9 inches long.
hothotpink1
Hot Hot Pink left is 18 inches long and right is 9 inches long.
candypinkCandy Pink left is 18 inches long and right is 9 inches long.
cottoncandypinkParty Time Pink & Cotton Candy Pink left is 18 inches long and right is 9 inches long.
mystic-heatherMystic Heather left is 18 inches long and right is 9 inches long.
purple-passionPurple Passion left is 18 inches long and right is 9 inches long.
eletricbananaElectric Banana left is 18 inches long and right is 9 inches long.
lightning-boltLightning Bolt left is 18 inches long and right is 9 inches long.
tripped-up-turquoiseTripped Up Turquoise & Atomic Turquoise left is 18 inches long and right is 9 inches long.
shocking-blueShocking Blue left is 18 inches long and right is 9 inches long.
badboyblueBad Boy Blue left is 18 inches long and right is 9 inches long.
midnight-blueMood Indigo & Midnight Blue left is 18 inches long and right is 9 inches long.
iguanagreenIguana Green left is 18 inches long and right is 9 inches long.
electriclizarddElectric Lizard left is 18 inches long and right is 9 inches long.
infraredInfra Red left is 18 inches long and right is 9 inches long.
neonorangeNeon Orange left is 18 inches long and right is 9 inches long.
Picture Pending!Dead of Night left is 18 inches long and right is 9 inches long.

Please Note:
Color guides should be used as a reference only, as screen quality may vary slightly to actual color shades.