Gents,
I had the same experience with my currently in progress Eduard Fw 190 D-9. Actually, I knew the color would be at least slightly different, and tinted the RLM 66 to match the etched parts. To my dismay, I realized that the now matching color was horrid and I had to start over again.
There are a lot of Eduard 190s in my stash, and looking through them showed that some were really close to RLM 66, and some (like the ones I used) were not even close; maybe 10 shades lighter.
The reason I bring this up is, I sent photos of the "bad" colored parts to Eduard via their "info@eduard" email address (it seems that they now have a dedicated support email form) and they wrote back within a business day saying they would replace the poorly colored parts. And the did just that, with zero cost to me.
I believe that they know they had a time period with poorly colored parts, it was even referenced in one of the monthly newsletters, in terms that they knew they had a problem and it had been rectified.
Give it a try. Eduard has always had very good customer service in my experience, and I bet they will take care of you if you provide photos and a nice email.
Best regards,
Mike