Nearly half of my wreath is yellowing, I only received it 2 weeks ago or so.  If the whole thing changes color I'll be very upset as I paid $85 for it. I'm scared to spray it with water as some other reviewer mentioned it ran green color down their wall.  I guess if it goes yellow, I'll try to 'repair' it by spray painting it green. haha It has a VERY strong odor, like that of decomposing grass.