Double dilute horses typically have a pale blue baby blue hue about them.
Blue eyes caused by frame and splash have a vibrant sky blue color to them.
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You beat me to it
Double dilutes can also have a greenish hue to the eyes as well:
The way I see it, a "white" horse is white because of one of 3 effects:
- Graying. These horses are born any other base color, and gray out over time, eventually becoming solid white. Their skin remains the same color it was, though- gray under colored areas, and pink under any white markings that were there at birth.
- Pinto patterns. Maximum sabino, dominant white, etc. are examples of pinto horses that essentially covered in one giant white spot. The hair is completely white, and the skin underneath is an unpigmented pink. They may have dark eyes, or they might have vibrant blue eyes (the frame and splash pinto patterns will sometimes produce blue eyes like this)
- Double dilutes/psueo double dilutes. Horses with two cream genes are considered double dilutes- the base color has been affected with a "double dose" of dilution producing anything from white to a very pale shade of the base coat. The skin is pink, but is still lightly pigmented. Horses with a cream gene + another dilution gene (like champagne or pearl) can have a very similar appearance to double cream dilutes and are often called pseudo double dilutes.
Oh, and there are some appaloosas that are essentially completely white, too. But appaloosa still confuses me
Double dilutes can also have a greenish hue to the eyes as well:
The way I see it, a "white" horse is white because of one of 3 effects:
- Graying. These horses are born any other base color, and gray out over time, eventually becoming solid white. Their skin remains the same color it was, though- gray under colored areas, and pink under any white markings that were there at birth.
- Pinto patterns. Maximum sabino, dominant white, etc. are examples of pinto horses that essentially covered in one giant white spot. The hair is completely white, and the skin underneath is an unpigmented pink. They may have dark eyes, or they might have vibrant blue eyes (the frame and splash pinto patterns will sometimes produce blue eyes like this)
- Double dilutes/psueo double dilutes. Horses with two cream genes are considered double dilutes- the base color has been affected with a "double dose" of dilution producing anything from white to a very pale shade of the base coat. The skin is pink, but is still lightly pigmented. Horses with a cream gene + another dilution gene (like champagne or pearl) can have a very similar appearance to double cream dilutes and are often called pseudo double dilutes.
Oh, and there are some appaloosas that are essentially completely white, too. But appaloosa still confuses me
Thank you got the stuff I missed Posted via Mobile Device
According to this testing facility -- Pearl Dilution (Barlink Factor)- Horse Coat Color DNA Testing
Pearl is it's own gene, separate from Cream. SO, I suppose that means all horses with two cream genes should be called cremello and the term "perlino' reserved for horses which carry two pearl genes? That could get quite confusing though, I suppose, since the two genes manifest similar looks, when homozygous.
According to this testing facility -- Pearl Dilution (Barlink Factor)- Horse Coat Color DNA Testing
Pearl is it's own gene, separate from Cream. SO, I suppose that means all horses with two cream genes should be called cremello and the term "perlino' reserved for horses which carry two pearl genes? That could get quite confusing though, I suppose, since the two genes manifest similar looks, when homozygous.
Noooooo. Pearl is completely different from Perlino. Pearl needs two copies or another dilution to effect coat color. A Perlino is a bay horse with two cream genes. A buckskin is bay with one cream gene to clarify the difference. Pearl is a completely different dilution seperate from cream, dun, champagne, and silver. Posted via Mobile Device
According to this testing facility -- Pearl Dilution (Barlink Factor)- Horse Coat Color DNA Testing
Pearl is it's own gene, separate from Cream. SO, I suppose that means all horses with two cream genes should be called cremello and the term "perlino' reserved for horses which carry two pearl genes? That could get quite confusing though, I suppose, since the two genes manifest similar looks, when homozygous.
As Peppy pointed out, perlino doesn't refer to anything to do with pearl. However, pearl and cream ARE related. They are both mutations on the same locus. This means that a horse cannot be homozygous for cream while carrying a pearl gene, and the reverse.
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I didn't want to comment. 
