I cant find the towny plugin

this hasent been working and there are a bunch of errors. I asked my server host support team ad they told me to reach the author. the plugin does not work :/

[question]
How to make cities in different colors, but at the same time cities consisting of one nation were the same color?
For example, there are five cities: A, B, C, D, E
A and B in the same nation
C and D to another
E without a nation
How to make
A and B were, for example, red
C and D blue
A E in yellow
And for other cities, different colors were generated

Hello!
I would like to know what vars are there for the site?
That is, what can be specified in {{var}}