This is a plugin for Paint.NET which adds support for saving and loading the simple color lookup tables used by the Source engine for color correction in the .raw format.
This is supposed to allow Paint.NET to serve as an alternative to the famous Photoshop color correction trick, where the lookup table is imposed on a screenshot of the map and adjustments are made within Photoshop itself, with the color lookup table being saved with those adjustments.
This project is based on one of the Paint.NET Plugin Templates by toe_head2001. Those templates can be found here:
https://marketplace.visualstudio.com/items?itemName=toehead2001.PdnVsTemples