auto    : Auto Color Correction.
bw      : Black and White.
bcg     : Brighness / Contrast / Gamma.
cb      : Color Balance Correction.
curves  : Histogram Curves Correction.
fx      : Color Effects.
hsl     : Hue / Saturation / Lightness.
icc     : Color Management.
levels  : Histogram Levels Correction.
nr      : Wavelets Noise Reduction.
sharp   : Sharp / Unsharp Mask / Refocus
wb      : White Balance.

