I've done exactly that for the same reasons. I have a light interior and I used a black rubberized mesh product I bought a roll of at the hardware store. The black mesh at the bottoms of the door pockets is not noticable. First I cut out the right size and then sprayed one side of the mesh with a contact adhesive. I installed them several years ago with out any problems. Good luck

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2013 X5 3.5i M Sport
2004 M3 cabriolet SMG