The vibrant clear blue of the springtime sky does lift the spirit, for sure! You don't have to look for beauty for very long when the midday sun highlights the white bark of the bare birches so brightly against the sparkling azure of the sky. The blue still has that rawness to it though, which is so fresh after the grey of the winter (which I'll stop harping on about soon, promise) and it's the perfect forerunner of the balmier, hazier blues of summer skies.
Let me show you this grainy picture of the nighttime sky, in contrast. I took this photo the other day half an hour before midnight - at the moment it doesn't get much darker for the night. In about 5 weeks time it's midsummer's eve and then the sun won't really set at all... I'm still in awe of how the sun behaves at these coordinates throughout the seasons.
There are a lot of sky photography among the Colour Me Happy entries this month as you could expect. It's nice to have a virtual visit around the world to see how the blue looks in other peoples' skies!