I don’t remember if there were characters or much of a plot, but what I do remember is that it had lushly illustrated two-page spreads where each spread was devoted to a single color. I think yellow was a picnic in a wheat field with buttered bread…I also think there was a spread that depicted the beach (not sure what color it might have represented). Also, I think in each spread there was a teaser color spot or object that represented the next color’s scene. I think the book ended with a scene of all the colors. I would have read this in the late 80s, but it might have been 70s etc. It was certainly bigger than a Golden Book or board book.
The Color Box by Dorros, illustrated by Giles Latoche?
Hailstones and Halibut Bones by Mary O’Neill?
I think this is your book, The Land of Colors: https://www.etsy.com/listing/679550361/the-land-of-colors-a-poke-and-look-book?show_sold_out_detail=1&ref=nla_listing_details
Couldn’t find any additional pictures online but this was one of my favorites when I was a kid and still have a copy.
I am currently trying to think of a similar book from childhood? Did your book have animals depicting scenes as if they were humans but everything was that on specific color? I’m remembering a black raccoon
Was the pages of the book almost set up like a where’s waldo illustration but everything was the same color?
“The Rainbow Goblins” by Ul de Rico ? It’s on Amazon