If nothing has changed, and he's still eating and acting normal, there's probably nothing to worry about. Snakes often change color as they age, some very dramatically (e.g. green tree pythons, cotton mouths, copper heads). See if it's still there after his next shed. That's about all I can say without more info.

Although you say "his temperature usually varies around 80-87 degrees Fahrenheit", I assume you mean his hot spot, and not the whole enclosure? He definitely should be able to get to cooler areas for thermoregulation.

If nothing has changed, and he's still eating and acting normal, there's probably nothing to worry about. Snakes often change color as they age, some very dramatically (e.g. green tree pythons, cotton mouths, copper heads. This guy has a video going into some detail about corns specifically.). See if it's still there after his next shed. That's about all I can say without more info.

Although you say "his temperature usually varies around 80-87 degrees Fahrenheit", I assume you mean his hot spot, and not the whole enclosure? He definitely should be able to get to cooler areas for thermoregulation.

If nothing has changed, and he's still eating and acting normal, there's probably nothing to worry about. Snakes often change color as they age, some very dramatically. See if it's still there after his next shed. That's about all I can say without more info.

Although you say "his temperature usually varies around 80-87 degrees Fahrenheit", I assume you mean his hot spot, and not the whole enclosure? He definitely should be able to get to cooler areas for thermoregulation.

If nothing has changed, and he's still eating and acting normal, there's probably nothing to worry about. Snakes often change color as they age, some very dramatically (e.g. green tree pythons, cotton mouths, copper heads). See if it's still there after his next shed. That's about all I can say without more info.

Although you say "his temperature usually varies around 80-87 degrees Fahrenheit", I assume you mean his hot spot, and not the whole enclosure? He definitely should be able to get to cooler areas for thermoregulation.