These two images don’t look too different because the light that reflects off the objects changes the way the color composition turns out.
Black Adjusted Exposure White Adjusted Exposure
When I adjusted the exposure the color of the items are much more prominent. For the black image I used my purse and put the exposure almost all the way down. For the white shot I used Sketchbook paper and adjusted the exposure very high but to where you could still see the texture of the page if you look closely enough.
Good work.