sotrali/color-converter ? reverse-engineered prompt

Build me a simple Python command line tool that converts colors between hex, RGB, CMY, CMYK, HSL, and HSV.

I want to be able to paste in one color or a few colors and get the converted values back in a clean terminal output. It should be forgiving about input, so if I type something messy like rgb(50, 100, 200) or just a rough string with the numbers in it, it can still figure out the color unless I need to override the input format with a flag. Hex should still require the hash symbol.

Please also make it work with files, so I can read a file full of mixed color formats and write the converted results to another file, with an option to append instead of overwrite. It should have a help message and feel like a practical little CLI utility I can run directly with Python. If you need to check current docs for any color math details, go ahead and look them up online.