[Koko Ed]

As long as I have been an X-Cat the logo has been the same. From the early days the logo was different but it looks like in the early to mid 90's is when the current logo took hold.
Of course our logo is used on most everything associated with the team. You should think of your logo as your corporate identity. Because each FIRST team is like it's own corporation and is run like a small business of sorts. Your logo design is a big part of that.