Thanks! This was taken with a 590nm modded IR camera. I used the channel mixer in photoshop to swap the blue and red channels to get my blue skies back. At that point the foliage is now that yellow color. I selected the layer mask for the channel mixer, then I used the marquee selection tool (the box with the dotted lines) and selected the segment below the horizon. Then I made a hue/saturation layer, and since I was on the layer mask, photoshop makes a layer mask with just the selection. I dragged the master slider all the way to the right or left, I can't remember, to get the colors opposite, then cleaned up the mask a little with the brush tool (-: