Mine has mainly grey stripes on top with all the colour underneath. I don't know if it's the light coloured sand or him having to keep his eyes out for the larger Oscars that like to chase him from time to time.
Nice! How has his growth rate been for you? I have a breeding pair and they are now 1 yr old an about 5-6inches. Mine look skinny, but I hope mine thicken out like yours. Thanks for posting!