coloring

Hi everyone, I've been wanting to see a time lapse photo gallery of some inverts coloring up after placement in the tank, and haven't found any for a squamosal clam. So here it is....I picked this little guy up at Petco of all places last week. From Thursday to today, here is his color change...

My baby clownfish are 2 months old, a more experienced breed visited and said I need to give them color enhancing food, their color is poor/pale. The water is perfect, the ph perfect, they get water changes, nitrite/nitrate/amonia are all in check with water changes from a very old very well...