I'd go with intarsia, but then again I enjoy doing it. If you do it stranded, then you'd have to bring the yellow all the way around, or cut and start it over and over again.
When my father was a young, young man, he had a tattoo of a hammer and sickle on his hand. He was a merchant seaman, but many countries wouldn't let him off the ship and into their country because of the tattoo. (this was around WWII) He had the tattoo covered with a rose, which is still there, and he got to see the world.