I can see how the tiles are a little bit of a color mismatch with the design style you mentioned. First option — can they be removed? If there is a way to remove the tiles from the stand, you could easily install new ones that fit your color palette.
If not, I would see if there is contact paper or even specifically tile-shaped contact paper that you could cover each tile with. This plan is contingent on the tiles being smooth and not textured, which is a little hard to tell from the picture!
The third option is always to just paint them, though I would try one of the first two approaches first! No matter what you do, if you decorate the stand in front of the tile with a nice plant or some art, not too much notice will go to the tiles behind!