Unless it's got a veneer top, I always think it's best to have two finishes in mind for your kits; a translucent one if it's got good grain, and a solid one if it hasn't. Unless you go to a website where you can buy a specific body (and pay a lot more as a result) as Woks says, its all pot luck.
You might get lucky with a really dark brown stain for the IB-5. You don't want anything too light, but dark should reduce most of the grain contrasts.