I personally feel like the silver is the perfect contrast for the blue and black. White anywhere on then uniform other than the numbers would be too much of an eyesore with the black jerseys and black helmets would make them too monochromatic. One of the reasons the black tops/black bottoms work well on Carolina is because the silver balances out the uniforms. The only real changes Carolina needs is a reimagined stripe pattern. Also, keeping a silver helmet lets them keep the option open for throwbacks complete with the 90s word mark and redzones.