Color 1 is the band and color 2 is the hearts.I couldnt find a baby or a toddler to model the heart hat but i was able to get my other cousin to model the child version so im just using her picture for ever post so you will be able to see how the band looks on a person.
 
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.