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Here is my KP girl for an Example.

CaramelCandyAppleRKP

01 Melt Me DpSnKp

but how do you know if a horse is a kit promotor if it doesn't have a cloude? or can't it be that then?

Kit Promoter is a hidden gene which means it cant be tested for. In order for Kit Promoter to show and be registerable in the breeders club the horse has to both be hom for the kit promoter gene itself and have two kit factors such as the w20 and the r you mentioned above. If the horse is Het KP you wont know until you breed it to a confirmed hom kp stallion and they throw a kp foal or a breeding with a het kp happens and they both manage to throw the KP and a kit factor and wa-la surprise KP pony. Sometimes you can go back in a horses line and see where they got the KP form sometimes it's an all around surprise because the person who made their foundie KP didn't note it because they wanted it to be a surprise.

Those genes you can see - kit r (roan), kit w8 (white 8), kit to (tobiano), etc - those are collectively called "kit genes" or "white genes". Kit promoter, or KP for short, "promotes" or "makes more of" the kit (white) genes already there, causing cloud-like effects on the body of the horse.

Because Kit Promoter (KP) is a recessive gene, it needs two copies to work. It's much like the testable gene satin. If a horse has "Sasa" or "saSa" in their genetic code, they won't show satin, but if they have "sasa" (two copies of the lowercase sa) then they will be all shiny. In the case of KP, we don't know what the gene looks like since it's hidden, but I can say "KP" is having it and "no" is not having it for the sake of this example - so the horse would need to be "KPKP" instead of "KPno" or "noKP" or "nono" to be hom Kit Promoter.

Then, you need one extra thing on top of the horse needing to be hom KP. You need kit genes for the kit promoter to work on. And it can't be just one - you need to have two kit genes. So the hidden part of the horse's genes needs to say KPKP, but the visible part of the genes needs to say kitw8kitw3, or kitrkitto, or any other combination - roan, tobiano, w8, w10, kitm, sb2, they all work! You just need to have two of some sort of kit gene.

When you have hom KP and hom kit genes, only then do you get to see the clouds. When the clouds are showing (the horse is "expressing" the gene), then you're able to register the horse in the Kit Promoter Breeder Club (unless it also has fantasy genes). This is a similar method to snowflake and GP (snowflake needs to be hom and have one copy of appy to show, GP needs to be hom and have the horse to be bay to show). So, in short - hom KP, plus two kit genes. Then you get a cloudy horse. :)

*get

Lol ok. So how do people know that they have Homo kp horses (and no cloud)? :-/ :-))
I'm trying to understand so bear with me :P

Ok now i think i get it, thank you som much =D>

I know this is an old post but I wanted to add this....in lined horses KP may be hidden way back in the pedigree. I accidentally got into KP because through my bootstrapping I ended up with some surprise KP foals. Turns out but of my bootstrap boys are at least het KP and after breeding their daughters and granddaughters back to them I've ended up with a bunch of hom KP and even more het KP mares.
(Both of my boys are from Dark Star's lines)

@NowandForever
Because you weren't tagged, and that was in reply to you, sorta.

Bootstrapping means to breed a high producing horse to a low one (like a star stallion to a foundation mare). Then you do not do BA/SBA on the fillies (or colts, but most use the fillies, and geld the colts for showing), and breed them back to their sire, or another high papered horse. That way you will produce higher PTs fast, and get some amazing show horses :)