Hmm...then a real blue isn't possible...the only colors possible from a siamese sable and a smoke pearl, when you know that both carry for REW and sable point, are siamese sable, seal, sable point, smoke pearl, REW, and an oddball color.
The oddball color would have the shading genes AND tort genes, so I /think/ it might come out looking blue...but I would expect it's color to change quite a bit over its lifespan, and it probably doesn't have a proper undercolor. Although when I think about it, I'm thinking that the oddball color should actually come out looking like a blue sable point...
Since those colors are all temperature-sensitive, maybe just watch for it to correct its color with the season...I'd guess it's probably a smoke pearl genetically, and it's just darker because the dad carries for REW, and the shading gene is incompletely dominant, while this kit probably got the double shade gene, which comes out darker (essentially a blue seal).