Hetty, do you want to give it a pop color or leave it as it is? I really love your cart.
Is glass bothering you because of breakability? If so, you can have HD or Lowes cut thick plastic shelves in many colors.
If it were mine I'd paint it blue. (But I love color!) I'd use the levels too and have a large leafed plant in back and 2 smaller ones in the front. Also, hang a basket or two from the handle.
(I needed to be creative this morning...school work is so left brained)