User blog comment:Akhime/Updating and Customizing Touken Ranbu Helper/@comment-30558276-20170118012737

As for recoloring, I was just experimenting with it a little.

Open the file [main.css] with notepad (Location showed in image) and play around with all of the html colours. To find them all easily, I suggest pressing Ctrl+F with the keyword 'color'. Eg; '#000000' is the color code for black.

If you're like me and you're too lazy to read all of the text to figure out which color corresponds to which section, each time you change a color, save the file and re-open TRH to see which colour changed.(Of course, keep a vanilla version of the main.css file, just in case you want to re-try coloring or mess up.)

I used this to figure out which colours to use/how to input them. http://htmlcolorcodes.com/