1. Take in a filename as input
2. Find the file's extension
3. Look at the corresponding config file, and load the regex-color mappings
4. Load the file, with each character loaded as an object - character, color
5. Apply the regexes, one by one, to the file. if a regex matches a certain group of characters, those characters have the corresponding color.
6. Print the file, char-by-char.