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FWIW, you can get quite similar color efx by the following procedure:

1. Click on the blue channel - this will select it and turn the other channels off.

2. Click on the "eye" for the main, RGB channel - this will turn on all the other channels, but not select them.

3. Go to image/adjustments/levels, and move the left slider of "output levels" to about 128, and hit "OK". 

This will produce colors nearly the same as what you see on screen if you delete the blue channel (as you described in your post), but with this method, the result will be able to be saved by normal methods, not just screen shots.

Using the other sliders, or using the "curves" tool, you can further tune the colors to get the look you want.

HTH,

Tom M