A man (possibly the king of a realm) lives in a kingdom, its quite likely grey, and he discovers various colours in his castle / dungeon. You see a brilliant patch of colour in an otherwise totally grey scene as he discovers each colour. He rushes outside and paints the entire land colours, but this makes the inhabitants sick / depressed / angry etc. based on the characteristics expected of that color. Colors include (from memory) pink, cyan and yellow.

I first had this read to me in the late 70’s and as it was from my public library so may have been published considerably earlier, perhaps 1950’s or 1960’s.

I am looking for a children’s picture book. I probably had this book in the mid to late 1960s.  In the story there are 3ish siblings (I think animals, but possibly children) that play outside while their mother is visiting a friend. The mother’s friend has a picket fence that encloses her yard. On the fence is a grape vine or berry bush. The 3 little ones eat all of the fruit. They feel badly about their behavior and replace the fruit the next day by tying fruit that they bought to the fence.