I've had a few chances to play with the Sony Vaio S 15.5, but we don't have our review unit in house yet so I haven't been able to test the color gamut. My eyeballs say it has good but not stellar color gamut. And as per usual with several vendors' 1080p IPS displays, the reds shift toward the orange.
BTW, Apple's notebook displays haven't had a particularly wide color gamut for years. And flat screen HDs TVs use Rec.709 vs. sRGB and a different gamma, so your computer monitor and TV will not match.