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Indexed Color (palette color) in OpenCV??

The applyColorMap() function only allows enum maps to standard color maps. First of all, I need to be able to create my own and load it. What I REALLY need is support for a palette with the ability to provide my own palette. This must be a part of the image so that I can save a .png file and maintain the palettized image (not converted to RGB during the save). It astounds me that there is no support yet for indexed color images. Am I missing something?