Elkay LKQD35MT Polymer 3-1/2" Disposer Flange with Removable Basket Strainer and Rubber Stopper Mint Creme

Our sink is a year old. It is beautiful and we have had no issues with the drain flange and our garbage disposal as many other reviews mentioned. The issue we have is with the drain basket strainer and stopper. It stains and discolors and we have had to replace it twice. (item LKQD35) The sink does not stain at all (parchment color) so it is odd that the basket strainer and stopper, particularly the 1" ring that sits flush to the sink stains terribly. We have tried it in both parchment and black and both stain.

Not a disposal flange like they say. It is a plastic insert with a strainer. Pull the strainer out and the entire insert comes out sometimes