▁pe ach ▁skin ▁tone ▁and ▁blue - ey ed ▁cre ams ▁have ▁a ▁less ▁v ivid ▁sh ade ▁of ▁blue ▁when ▁compared ▁to ▁that ▁of ▁an ▁un p ig ment ed ▁blue - ey e . ▁ ▁Gray ▁vs . ▁Double ▁dil ute : ▁Gray ▁horses ▁are ▁born ▁a ▁normal ▁color ▁and ▁grow ▁progress ively ▁l ighter ▁in ▁their ▁coat , ▁while ▁double - d il ute ▁cre ams ▁do ▁not . ▁Gray s ▁that ▁are ▁not ▁affected ▁by ▁a ▁dil ution ▁gene ▁do ▁not ▁have ▁blue ▁eyes ▁or ▁p ink ▁skin ▁unless ▁they ▁are ▁due ▁to ▁white ▁mark ings . ▁There ▁are , ▁however , ▁records ▁of ▁pal omin os , ▁bu ck sk ins , ▁sm ok y ▁black s , ▁and ▁double - d il ute ▁cre ams ▁that ▁also ▁carry ▁the ▁gray ▁gene . ▁ ▁M ixed ▁dil utes ▁If ▁a ▁horse ▁car ries ▁more ▁than ▁one ▁type ▁of ▁dil ution ▁gene , ▁additional ▁cre am ▁m im ics ▁and ▁other ▁unique ▁colors ▁may ▁occur . ▁ ▁The ▁combined ▁effects ▁of ▁champ agne ▁and ▁a ▁single ▁cre am ▁gene ▁can ▁be ▁hard ▁to ▁distinguish ▁from ▁a ▁double - d il ute ▁cre am . ▁Fre ck led ▁skin ▁and ▁green ish ▁eyes , ▁or ▁pedig ree ▁knowledge ▁can ▁yield ▁cl ues , ▁though ▁the ▁mystery ▁can ▁also ▁be ▁solved ▁with ▁a ▁DNA ▁test . ▁▁ ▁The ▁p ear l ▁gene ▁or ▁" bar link ▁factor " ▁is ▁a ▁re cess ive ▁gene ▁that ▁affect s ▁only ▁red ▁p ig