After earning $300,000 in winnings right through his racing heyday, a horse named Metro Meteor has picked up a paintbrush and launched into a moneymaking new profession in retirement.The 9-year-old thoroughbred noticed his ultimate end line in 2009 due to crippling knee injuries, however has was an equine Jackson Pollock for the reason that he was adopted by Maryland artist Ron Krajewski and his spouse, Wendy. “These horses, whe…