HOW TO Adjust a sky’s hue and lightness

Boost colors

Press A to go to Pixelmator Pro’s Color Adjustments workspace. Drag Vibrance right. This selectively boosts the saturation of common landscape colors such as blue skies (without over–saturating skin tones).

Darken blues

Scroll down to the Selective Color panel. Click the light blue swatch. Drag the Brightness slider left to –100%. To darken all shades of blue click the darker blue swatch and reduce its brightness to –100%.

Cyan sky

For a more creative look click both of the blue swatches and set their Hue slider to –10%. This adds a wash of cyan to the sky that evokes the colors in a retro seaside postcard. Cyan skies often turn up in movies too.