Blue Bahia Granite discoloration?

My husband likes a Blue Bahia granite from an Italian quarry for a kitchen island with prep sink and a long counter. A vendor, who doesn't carry Bahia Blue, advised me that Bahia Blue will change color through oxidation and that the white will yellow. I'm worried that it may not be the right pick. I cook 2-3 full meals a day so it will see use and moisture. Should we be looking at something else and if so what is a good blue color stone for us? Has anyone worked with Bahia Blue? Thanks.