Certainly won't be claret and blue as the chairman is a Chelsea supporter (they also have 3 kits a season by the way), so no way will west Ham colours come into the equation.
In the good old days up to 10 years ago the club insisted on a home and change strip that were replaced every other year, home kit one year, change strip the next year. This was so that the supporters were not fleeced every season with 2 new strips but now 3 new strips.
I wonder what percentage of say 1000 supporters will actually buy all 3. My guess is that will be single figures.