Of course, any ideas of what Kirk's ship might "really" have looked like went out the windows when TNG, DS9 and ENT all went back and canonised the look of the TOS sets exactly as seen on screen. Ah, well.
Nah. The "TV shows" of TNG, DS9 and ENT didn't look like "real life" either. They just didn't want to contradict to earlier "TV shows" of TOS. Right?