What determines this shadow colour?

No.5843108 ViewReplyOriginalReport
Asking for help and any help is good bros im stupid and want to get good. So the warm light = cool shadow rule is retarded. Shadow colour is determined by the colour of the object itself its environment and is influenced by bounce light. So in which case am I just retarded for not seeing why these shadows are so cool relative to the light and object colour? Is it the blue shaded clouds bouncing their light over and if so what made the clouds so deep blue?