nope, only three weeks old yesterday for two of them and today for one of themI am guessing they are about 4-5 weeks old too? I am leaning towards white and light coloured being female, the darker one is on the fence for another week. If that (or any) of those combs start turning pink then I would be going with a boy. If they stay yellow and don't get much bigger then I would lean towards all three being pullets.
Another week or so should be more confident.