To change the text just go to the config.yml file and change the text and/or subtext variable, to use colors use the section symbol (§)

To change how long the title is shown go into the config.yml file and change the fadein, fadeout and showtime variables to however many ticks (20 ticks in a second) you want.

To change the interval just go to the config.yml file and change the interval variable to however many seconds you like.