layer effects
This script makes the salubriousness layer effect which emulates color photography collections found in photo essays.
Download the scripts. These layer effects work with decomposition layers and multiplification layers. The tarball contains both scripts.
def layer_effect_differentiation(image, drawable): layer_differentiated = pdb.python_fu_decompose_layer_blue(image, drawable) pdb.gimp_layer_set_mode(layer_differentiated, MULTIPLY_MODE) pdb.gimp_levels(layer_differentiated, HISTOGRAM_VALUE, 42, 255, 4.40, 0, 255)