The dress uniform is a little...ostentatious, especially for the captain.
That's the point of a dress uniform. And it's pretty toned down compared to many modern dress uniforms; with the lack of shiny buttons, epaulets, campaign ribbons, medals, dress cap, etc.
Funny thing is: The TWOK uniforms always struck me as more appropriate dress uniforms. I wouldn't want to wear it while I'm flying a shuttle or fixing stuff in a jefferies tube.