Polystat Thresholds

Hallo guys,

ich have one question, i use the “Polystat” to monitoring the Internet-Interfaces, it shows me that the Interface either UP or DOWN , and i want to use the "Thresholds " to change the color,
for example :
1- if the Interface up than >> the color should be green
1- if the Interface Down than >> the color should be red

how can i do this ?