I actually tried three different versions of this effect (this has to be the effect pedal with the most variants by far), a “Ram’s Head”, a “Civil War” and a “Creamy Dreamer”. They all sounded about the same to me. I ended up boxing the “Creamy Dreamer” variant.
I initially intended to paint this enclosure, but it turns out I’m not really artistically inclined. In retrospect I shouldn’t have made those measurements in permanent marker. I more than made up for it by adding some cream colored knobs, though.
Update (15.02.2012): Benno spotted a mistake on the Ram’s Head layout where a 1M5 resistor was accidentally labeled as 1K5.