eggs and claiming eggs

i have to 6 chickens all over 7 mounths they are 1 hen that is a silver lace 1 roster that is a red lace 2 murakanas and 2 sex links im getting to 2 brown eggs a day and im trying to figure out whos laying and who is not i think my one sex link is laying and no clue on the other one i know the murakans are out because they color eggs