Lockwood in the Palmer House Hilton has been elegant since its debut in 2008… whether it’s been as inviting as it could be is another matter. The luxe white-and-smoked-mirrors look and the fact that it half-extends into the lobby have made it great to look at but a little hard to love at times. With that in mind, it closed for a few days yesterday to get a facelift, adding warmer tones to the room, dialing down the posh a little and amping up the glitz— particularly with a color-changing LED system behind the bar. They’re also adding about 20 seats to make the room feel busier and livelier. All this is by way of giving a fresh start to the food of new chef Joseph Rose, who came over from Sixteen in late 2012. The restaurant will reopen the weekend of April 6.