Support loading palettes from a file

[Shrinks99]

Making creative adjustmenets to palettes, or even just ensuring that you are sticking to a consistent set of colours used elsewhere can be time consuming. Most other graphics software attempts to solve this problem with user-defined palette files, allowing the user to keep a library of colours on hand for later use.

There are lots of palette formats out there and some are more obtuse than others. I might suggest GIMP's palette format as a first one to try? It's available as an export on lowspec.com (a commonly referenced site for pixel art palettes), seems both easy to author and parse, doesn't support an alpha component, and (like didder) is limited to the sRGB colorspace.

[makew0rld]

This makes a lot of sense! Looking at the site, supporting a simple "HEX File" is probably a good idea as well.