question about early color tv

[GeorgeJetson]

Hi,
I have often heard people describe early color televisions as having "saccharin colors"
Why was this? Were the colors much more saturated and beautiful?

Since we're on the subject of color,why was it that the old films like "Artists & Models" with Dean Martin & Jerry Lewis and 1963's "The Nutty Professor" have dazzling beautiful colors that really explode on screen and then by the late 60's the films all looked dingy,grainy and washed out?

I would have posted this second question in a film area but couldn't find it.