Re: USS Grandeur - One... More... Time!
Not seeing anything in that pic, regardless, it's internal.
Look at the rails.
Regardless, there are yellow and black stripes on the NX exterior too if you look at Doug Drexler's high-res renders.
Near the two round airlocks and at the top of the image:
Visible here too:
"STAR TREK is... Action - Adventure - Science Fiction."
-- Gene Roddenberry, 1964, top of the first page of his original pitch and outline for Star Trek