Grim, have you tried using the Hue/Saturation to get richer green colour?

I find the Hue/Saturation controls to be rather powerful in adjusting the overall colour in the image as well as targeting individual hues. If you use the Saturation adjustments on the greens you may get what you want.

1. When you call up the dialog box (ctrl+u) you'll get default of apply your changes to the "Master" colour range (overall colour in the image). Change this to Green (ctrl+3). Move the slider to the positive to increase intensity.

2. Make sure you have the "preview" check box selected so you can see the effects your adjustments make on your image.

3. As you make adjustment to the Saturation levels the Colour Ramps will give you a visual reference. The "top" ramp shows the full spectrum range available. The "bottom" ramp shows the new colour range created by your change.

You can also try and "paint" some more saturated colour into the Greens by using the paint brush and setting the "blend mode" to Saturation. You have better control this way because you can also use the "sponge" tool to intensify or dilute your colour.

Just some ideas kicking around in leu of sleep :)

:)
retrocity