I had a yellow legged rooster and crossed him with a yellow legged hen, but only 3 of the 5 resulting birds had yellow legs. Is that because of bad luck, or is that physically impossible and proof that the less dominant roo with white legs actually fathered those 2 chicks?
The original yellow legged cock is in the freezer now. He had gout and his feet were a mess. I did hatch a yellow-legged cockerel from him, but the white legged guy is much bigger and quite friendly in comparison.
The white legged Rooster might still have yellow genes. It is not simple but Breed him and see what you get.
This site has an explanation for it. If you do not get yellow legs, work on conformation and get a Cockerel from Megan's line later.
http://www.the-coop.org/forums/ubbthreads.php?ubb=showflat&Number=33981