I personally picked whiteout because white is by far my favorite colour for cars. If you're in North America and really want a poppy, "look at me," colour get a rs1.0. That yellow on that car has seriously grown on me and is the only other color I would consider for this car. Not to mention there are only 1500 of those cars made in North America. Rare?
Either that or a bright orange, not the hot lava orange, but a much brighter orange. Dark grey looks pretty good on these cars as well. But white is my personal favorite and receives the MisterSheep stamp of approval.