Changing CSS when seconds > x

[jcorbit]

Angular-Timer is a great addition for my app but I"m having an issue when trying to change the background color of a table cell when seconds reach a value greater than X. Per the examples ({{minutes}}:{{sseconds}}{{secondsS} I thought the last value (secondS) might hold the value I need to check but that isn't panning out for me. Can you suggest how I can monitor the seconds so I can control display accordingly?

Thanks!