'D'H moved candle sticks off the mat they'd been put on to protect the table cloth before the wax had hardened and white wax has spilt onto a beautiful but flimsy table runner. I'd hoped the hardened wax would just peel off but it hasn't. Can I just wash it in warm water and hope the rest comes out? Or any other suggestions please? The runner is coloured so need to be sure whatever I do doesn't take the colour out. Thanks