Just when winter was starting to wear us down, a new bar brings a breath of balmy air: The Jamaican-themed Mr. Brown’s Lounge, named for a Bob Marley lyric, opened this weekend in the old Sak’s address in the Ukrainian Village. Our photographer stopped by to snap early adopting barflies as they tested the menus, both edible (jerk chicken, mac and cheese from a Jamaican-born and -bred chef) and potable (Red Stripe, rum punch).