Okay, so my Gen-Z side got absolutely exposed, apparently.
I forgot that some people still use printers… 
So, I made an alternative version of the map, which should be more friendly to your ink costs! With @mathbrush’s help, it’s now also on the SpringThing page, accessible via the “Print-Friendly” button.
To those of you who already printed this thing out on an inkjet printer: I am so, so sorry. 
For those who wanted to print it, but were hesitant about the dark colors everywhere: You’re welcome! 