I just had a 24x36 framed with a simple black 2" wood poster frame. No matte or glass. Cost about $70. You might get it done for less, you certainly could spend more! My frmae shop has some narrow metal colored frames that are inexpensive, in metal colors and pink, blue, green. Not sure what you mean by cool. I liked them, but theat sort of frame didn't complement a landscape so much! Pay a visit to your local shop and see what you like.