Griffinkid, from what I've read the dark on the beaks is fine. A lot of mine have dark beaks towards the base too. The legs will probably get darker as they get older. My 6 original birds that I just posted pics of, their legs have darkened the older they have gotten, and those pink stripes showed up later too

. Feather color in the babies changes a lot as they grow, at least it did with my 6, so I wouldn't base any decision on feather color for awhile. It will be interesting to see what happens with my new 25 birds.
Mary Ann Harley advised me not to cull too early, although I'm wondering if I should go ahead and find new homes for my birds with imperfect combs. It would seem to me that this would be a "first impression" issue with a judge, and since it's hereditary, perhaps it should have some importance. That is just my thought, I may be completely wrong. Opinions from the more experienced definitely welcome!