I much prefer a blue sky to a grey one, though a pink tinge in an early morning or evening is also very pleasant, as is a brilliant orange glow at sunset. Blue skies often lift my mood, regardless of what else may be happening. Perhaps it is because I spent so many of my earlier years under the grey skies of Britain.
Here in Australia, in "the little town of Dorothea", there are often plenty of blue skies, especially when there is a drought. Britain has droughts, too, though even then the sky can stay stubbornly grey.
How do colours affect how you relate to the world?