- Load up an image with a lot of greenery.
- Fire up the Channel Mixer. I don’t know where it is in Photoshop, but in the GIMP it’s in Filters->Colors->Channel Mixer.
- Slide the green bar down a small bit and move the blue bar up a bit. Values of 100, -33, 47 worked for me.
- Green grass looks much more vibrant and healthy!
I tried this on a portrait of the local camogie team.