I think the contrast is mint. Have considered installing down rings in the back? Something like the E-track rails would be super functional if integrated into the side walls in back.
5' Galvanized E track Kit - 4 Rails + Tie-down Accessories - 16 Pcs
Outfit your trailer w/ E-Track. Contains (4) 5’ E-Track rails, (2) 2"x12’ ratchet straps, (4) rope tie-offs, and (4) standard O-rings (2) heavy-duty O-rings.
www.dccargomall.com