My SD-2 has an orange foot pedal and a yellow chassis.
I am colorblind so I can't tell. My bandmate pointed it out. Let me know if you can't see the difference and I'll try to take a better pic. Here is the label -
It dates to September '96. Do you have a pedal with a mismatched color scheme?
never heard of that before wierd. my SD-2 has a wierd marking. to the left of the "O" on "overdrive" there is a square with two letters in it (cant recall exactly what two letters) but its been painted over in the yellow paint. kinda like the chassis was marked before being painted at the factory.