You can either get the baby hat with one eye or two eyes everything else will be the same. Color 1 is the trim of the hat and if getting for a girl itll also be the color of the bow.
 
PLEASE NOTE:the sizes goes by what the child wear not by age since this is crochet clothing. For example the baby is 6 months but wears 0-3 in clothing then you will need to get the size 0-3.