I think all the artifacts will help make mana needs more forgiving with all the colorless. To your point, you got 68% colorless costs, 24% black, and 8% red. Or, when you will need colored mana, you will need black 3 times as much as red. Thats a good base to start from when planning on building sources. Also, you don't need double red in any of your spells, so that helps a lot.
Treasure map will help out as well. As you have it, my gut says it is a little heavy on red sources, but only a little. Leaning a little more towards black will also help with BB casting costs.
Marionette master maybe a nice 2ndary win condition from sideboard.