Cool down and walk it off. WEAR Seymour Neon Pumps What: Acid colors strike for spring. Why: Abandon the black. When: Mon.-Sat., 11:30 a.m.-7:30 p.m.; Sun., noon-7 p.m. Where: Albertine, 13 Christopher St., b/t Greenwich Ave. & Waverly Pl. (212-924-8515). SEE UES Art Walk What: Goya, Matisse, Rothko, Picasso, and Daddi make an uptown appearance. Why: They’ll provide sights. You provide strolling. When: Thru June 15. Tues.-Fri., 10 a.m.-5 p.m. Where: At six uptown galleries. Check them out in any order. BUY Alice Ritter and Petit Bateau What: French lines at wholesale prices and 70 percent off. Why: It’s international, dahling. When: Thurs. & Fri., 10 a.m.-6 p.m. Where: 41 Great Jones St., b/t Lafayette St. & Bowery, 2nd flr. (212-353-9141). Cash only. Derek Lam What: Wholesale and below on Chantilly lace tanks, pleated jersey tops, slouchy cotton pants, and cap-sleeve linen dresses. Why: Go in like a lion. Out like a Lam. When: Thurs. & Fri., 10 a.m.-6 p.m. Where: 601 W. 26th St., b/t Eleventh & Twelfth Aves. GET Crafty What: Craftwerk, a cutesy new subterranean space where you hear good yarns and crochet them, too. Why: Bang-for-your-buck classes — a three-part series is just $30. When: Call for program times. Where: Sleep, 110 N. 6th St., b/t Berry St. & Wythe Ave. (718-384-3211).