A Japanese based company EK chain has released colored chains for public.
EK chain is known as Enuma chain in Japan and they have been selling chains to major companies like Kawasaki, Kubota, Mitsubishi for over half of a century.
The colors are powder-coated on championship winning chains, 3 different types available. The toughest one is able to handle up to 180hp and 10,560 lbs.
There are colored tires available but don't seem like really taking off; I have not seen one put on motorcycles on the road, yet... so I am not sure if this sells well but for custom bikes, those chains might be neat to accentuate or color coordinate with the bike you got.
I know little girls would love to play with them. There are tools like screw drivers, pliers, a hammer with flower design printed on them for those who wants everything pretty. If you want to be a dealer for those, you can visit this site