This is a list most color mutations in guinea fowl
1) Pearl Gray is one of the most common types of guinea fowl there are they have a dark gray aperance and have white spots on every feather with a blue head and yellow\tan crested on their head.__________________________________________________________________________
2) Royal Purple is a more rare color and there for is a little more expensive, it identifiable from its dark purple chest and its purple tint to the rest of it's body. it has a blueish purple head and a bright yellow crest.
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3) Silver is a color that is rather common and is very easily identifiable, because of it's silvery light gray appearance and is one of my personal favorites.
4) Lavender is a recessive gene any darker guinea can have, but not show a single trace of it. its quite rare in some places and a pure Lavender pair can sell for a big chunk of money. they have a bit more light blue than a silver so be careful if you mix the two as their quite hard to differentiate.
5) Coral blue is also a bit of a rare breed i would say, as its very hard to find and again a pure pair can go for a lot of money. they have darker gray\light blue coloration and have white\gray lacing around the ends of the feathers.5) Albino is one of the most obvious to tell apart from other colors, as it is all white and is semi-rare. They are however commonly mixed with the pearl gray in order to make Piebald. They also have a completely white head & red crested.
5) Pieblad is a mix of Albino & most commonly Pearl Gray is a very popular color and is very easy to make.
6) Buff is a color many chicken owners know because it a very common color in chickens like the Buff Orphintons or the Buff Baramas, well there's also a buff coloration for these guys to. Just like what most people would think just a big orange bird with a naked head.
