Before and After

Step 1
Save the before picture and open it up in PhotoFiltre.

Step 2
Go to Adjust > Levels and make your settings as mine.

Step 3
Adjust > Hue/Saturation:

Step 4
Filter > Color > Colored Layer: The color I use as the layer is #003366. You can copy my example into your PhotoFiltre and use the Dropper to select the blue color.