WHERE YOU CAN READ OR WATCH MANGA IN COLOUR?

No where, you can search for the answer online, which is also available on Yahoo answers, and the answerer says this site: http://www.zarosaki.com/

but really not all the lastest manga is available there. One Manga (http://www.onemanga.com/Naruto/) is the most popular manga site. And manga here is all in BLACK AND WHITE!

+ Note this: Youtube has many Naruto episodes in colour, by episode 'mean many lastest manga episodes.