i tend to see a few black storms knocking around, i think black is always a popular colour for bikes, but did i spot it has a yellow screen????
now if a yellow screen was to come up on ebay from roughly the same area. my advice would be to buy it and pay for it, the chances of pick up in person would be 0%, so get it posted to yourself, firstly hope that theres a return address on the parcel, or secondly try contacting the seller saying its damaged or something like that, and that you need to post it back to them, you never know....
this happened to my cousin, he went to visit a friend in buckhurst hill, and he had his rear spoiler of his fiesta st150 ripped off. low and behold there it was along with a couple more, and the seller lived in the same area, the police and ebay weren't interest either
anyways good luck and fingers crossed mate