Most sushi bars are doing irregular things with sushi that will satisfy your irregular desire. Almost all of them have a butane torch to singe (cook) specialty "sushi" to cater to the soccer moms and the squeamish. The same tool (or a little riding and patience) will surely bring about the same result on your modern RS's header pipes.
Before technology and these dual-walled pipes, pipes turned blue, then soonafter purple, then even more quickly black, and then into mollusk-encrusted pier pilings shortly thereafter. I remember those days too, and I remember that brief, shining moment between 500 miles and 1200 miles in those times when the headers were at the peak moment of freshness, like a junior college cheerleader. Kawasaki did a pretty good job of replicating and sustaining
the header pipes at 350 odometer miles. If you can't enjoy that, go "full-on rainbow" and get a titanium set.
At 10,000 miles, (a few of them, pretty tough), the only thing I could ask more of my own pipes is a prettier, younger face looking back at me in that too-vivid reflection.