I agree entirely.The planets have always been mono or duo chrome. Just the number of colors on the palette was reduced. Going back to monochrome green isn't really an improvement over monochrome beige. What we need are proc gen planets that can host a variety of colors on the same planet surface. Proc gen coloration is probably a LOT more complex than it sounds, especially on a zoomed in 3D surface that is attempting to look believable. They've made significant progress on this front for ice planets, but rocky and metallic are lagging a bit behind. Although the latest textures aren't too shabby.
Although Mars has an atmosphere I am still surprised that our planets don't have more features. Have a look and then dream...Mars photos - NASA