You can actually replace the inner color of the bowtie with black.
The company that Chevy subs the manufacturing out to sells a black replacement for about $100 bucks, I think that's for a pair.
I don't think they are RS sizes, you'd have to do some tally tally if you have an RS.
I don't have the link handy, it's somewhere in here, I think. Can also get them on Chevy mall website. The manufacturer is ABD I think...