The 2.5D LUT grid editor allows quick corrections of the whole range of colors in an image and, at the same time, precise modifications of a group of selected color nodes.
For each group of color nodes the editor allows the edition of the brightness curve and thresholding : changes in colors are limited to a range of brightnesses and the brightnesses of colors in the group are corrected according to the curve. Other colors keep their initial brightness.
A quick moonlight effect only using two groups of nodes.
See the tutorials for a complete description.