Photoshop :: Sky/cloud Colorization

What are some ways to change the color of the sky in a picture?

My method was creating a new layer above the photo and setting its blending mode to "Color" while using a brush to paint the sky with a shade of blue. It works well with pictures without too much obstruction (trees, etc.) against the sky.

Are there any ways to achieve this in a more easier way? I was thinking maybe with Replace Color or Selective Color but i cant seem to work it out, especially if the sky has clouds in it?