The "Deluxe Gatefold LP" is just the Marathon Artists 2xLP pressing, even though the pre-order was sold by Mom + Pop. The "limited to 100" thing seems to have been just for that pre-order site.
The MoMA web store now has the colored vinyl available for purchase at a slightly inflated price:
http://www.momastore.org/museum/moma/MoMAProductSearchCntrCmd?q=bjork&storeId=10001&langId=-1