The "Classic" label only has 4 colours: Red, Black, Gold, and White. However, some of the newer labels have 6 colours: Red, Black, Gold, White, Blue, and Yellow. The newer labels came into effect in 1999.
I can only count 5 colors on a classic Campbell's soup label (minus the photo recipe on the back) they are white, dark red, gold, black and blue (on the purple side). But 7 if you want to count the Labels for Education logo, so add green and a yellow orange.
That depends on the type of soup that you have.
You can find out more about campbell's coupons at http://soup-coupons-delivered.com/common/campbells-coupons or you can also try http://www.grocerycouponguide.com/articles/campbells-coupons/.
Tomato soup
Campbells Soup coupons could be found online via a number of websites. You could visit websites such as Campbell Soup, Campbells Kitchen and Surviving the Stores to get them.
A painting of a Campbell's soup can.
Tomato
campbells
Andy Warhol. 32 soup cans in all.
Campbells Soup Cans
if you mean campbells soup cans, it was Andy worhol.
He influenced it by being the main founder in the revolution called, "Pop Art".