my favourite color is green so if you ask me then my answer is that it would be cool if everything aroud was green. green is the color of nature, it is somehow very pleasant to look at, thats why i love it. it's kind of very soothing.
Still, i can not wish for everything to be green just because i am sure i'd get bored of it fast. the world aroud me is different and the colors as well. that's why it is this beautiful. i honestly enjoy all the colors even if i have a favourite one. it would be a waste to have the world in a single color, cause like this the beauty would be too limited and even the nature, which i love so much, has various colors that makes it even more satisfying to look at.