Unlike any of the many cats of my acquaintance, the slits of Archie's nose aren't colorless. They're black, like he has a dirty nose.
The boogers in his nose are dark/black.
I've had him since he has about 9 weeks old. He's always had a good appetite for water and for food (I've fed him only Science Diet kitten food).
When I first got him, I used Tidy Cats clay litter. I've since moved on to clumping litter. He's had a dirty nose the whole time.