From Destinypedia, the Destiny wiki
I removed the Trivia bit about Spider and the Ketch because it was predicated on false information. It originally state the stripes on the Ketch were Orange and this was somehow likely related to Spider
However the stripes are not Orange, they are Purple, and most likely the Ketch just belongs to House of Dusk.
EDIT: I have restored it. Apologies if I'm doing this wrong, I am new to wiki style things. I discovered that from other angles the stripes are in fact orange, they just appear purple in most places because of the general lighting.