He definitely have Granite Look...
If You have other "morph" males with You can put to your Morph Females.. i will do that first.. With Granite looking Animals there is always chance that they just look Granite nothing Else... If he was female then I will definitely but some "morph" male to "her" ... but with male I will prove him first with "normals" then go with some morph like pinstripe or lesser and see what will pop up...