The problem with that is you've taken a historical paint scheme and made an unhistorical one. Not the overspray on the tail, but the splinter camo seen on the wings. Can you go back to a version you saved with the proper color, the one where you say it doesn't have enough contrast? Try this:
Go to just that RLM 74 layer and boost the saturation a tad (like 5-10%). Then go to the RLM75 layer and DESATURATE it just a take (5-10%, play with the slider a bit).
Tweaking the color, brightness, contrast, and saturation of the existing layer will give you the "pop" to separate the colors from each other without totally replacing the color.
Then move the RLM71 layer back on but only on the tail area where it oversprays. What does that look like? I.E. tweak the 1, combine the second, to create a third using parts of both.
I think the goal is to strive for accuracy or authenticity, so that's why I harp on it. Might look interesting, too!