Why is pininyahang manok in Silang, Cavite red?

Everyone is familiar with the light pininyahang manok dish at home and in canteens all across the country.

But the version of the dish in Silang, Cavite has a peculiar trait: it's color red.

What is the reason for this? And more importantly, is it good? Kara David tries it out in Pinas Sarap. —JST, GMA News