Mine has grown rather large and has always gone thru short periods where it looks a little droopy. Its always been healthy and maintained its color...just has good days and bad days!I believe its their nature....I have noticied that when it is droopy is when my alk is a bit on the low side...so that may contribute.Normally I range from 2.8 meg/l-3.5 meg/l....on the lower side is when my colt seems to have the blues.