Asking totally hypothetically: how do you think one could make Linguist work with Piet?

[jtint24]

Piet is an esoteric programming language, one that works off of images rather than text files. Only a couple implementations of Piet actually exist as far as I'm aware (like an interpreter online here) but the language still has a bit of notoriety. Given that Piet programs are stored as PNG's, I would imagine it would be totally impossible for Linguist to identify Piet files without some heavy reworking. But, in some alternate universe/far off future date, how would you go about trying to make it work?

(PS I highly recommend looking at some cool sample Piet programs here)