Can you flip the top cover so it's all krinkle black on top?
...or grind the raised Roush lettering and the center stripe down, refinish with black krinkle powdercoat, then use a dual action sander to strip the powdercoat off the remaining two racing stripes.
...or build a rectangular 'flame shield' and install on top of the Roush cover to help hide the oval air cleaner.