I'm sure you've already got Thursday, Dec. 4, marked on your calendars. That's the evening of Nob Hill's much-anticipated Shop and Stroll, when most area galleries and shops will open their doors to folks who want to get a jump on holiday gift buying. One of the cooler events will be the Coleman Gallery's reception for its Second Annual Invitational, a show featuring work by 10 contemporary abstract artists from New Mexico. The reception starts at 5 p.m. and lasts until 10 p.m. If you can't make it that night, the exhibit will run through Dec. 31. 232-0224.