Garry,
At the sportsman show this year, I posed the same inquery with a tournament angler attending the event. Simply, he said, Pink was popular because of visibilty. Take senkos for instance, you cast 'em out there and watch them drop. A good indicator of a hit is if the bait disappears from view. Couple with a set of good polarized sunglasses, watching for strike on the drop with bright coloured plastics is a favourite tool of many tournament bass fishermen. White is also a popular colour in this regard.
Besides senko for LMB, I like a white/chartruse spinner bait, preferably double-bladed, tipped with a trailer and a 3 inch plastic twister tail. For SMB, tubes are great and occasionally a small crankbait.
reefrunner