I would agree that the mint green pedal is likely a PN-2, although the Boss EH-2 is similar in appearance. The second pedal appears to be a dark teal with 3 knobs, which could be a TR-2 (an SD-2 could appear teal in the right light), but the final pedal could be the trickiest. It appears to have a tight, horizontal orientation, which could be a few different Boss pedals. The Boss ODB-3, OS-2, the PW-2, the dual SD-2, and the DF-2 (perhaps the most aggressive of these?) all have a similar 4-pot layout. I've never used any of these models personally, but I might start with the DF-2, if I was trying to mirror that chain.
[youtube]http://www.youtube.com/watch?v=iFqN7hPlIsk[/youtube]
Based on the audio, you could probably do something similar with a square wave tremolo, volume pedal, and a thick, filtered distortion. Of course if he is using the PN-2 and TR-2 in series, they could be set to varying speeds for more extreme ramping applications. Or if the first mint pedal is an EH-2, that could account for some of the dynamics of the distorted signal. Just listening to your linked clip, it reminds me of a really pinched, gated fuzz you'd find in something like an EHX Micro synth. I guess the next question would be: how close is their live sound to their studio sound?
