Despite that, I was getting skill points for them 90% of the time on the test server, which is pretty good. And I'm happy to confirm that the Small Feast recipe stayed yellow beyond 437 (the point that it currently turns green). It stayed yellow all the way to 440 and all the way to 445. I ran out of meats/fish to cook beyond that, but I think it's unlikely for it to turn green until 450. Even if it does, this will eliminate a HUGE amount of pain and suffering on the part of chefs everywhere. I'd much rather suck it up for the last few points of Cooking than endure the torture of slogging through 13 points of skill on green recipes.
Here's a pic of my Cooking window at 445:
So thanks to reader Gorman for reporting on this rumor (this change is not mentioned in the patch notes) and prompting my investigation =)