aStar Trek V Brings us the first major redesign of the bridge in the movie franchise. I-IV had been using the sets created for The Motion Picture and modified them as necessary TMP had pastels and grays while Wrath of Khan and seen the darker tones and adding little things like handheld fire extinguishers and no smoking signs. The Search for Spock bore damage from the previous one but was also lit a bit brighter. For the end of The Voyage Home they did a horrible all white paint, metal accents and just a general eyesore. The manual buttons were gone and replaced with Okudagrams (the first instance of them, prior to TNG).

For Star Trek V, the sets were apparently damaged, either by storm or by their use in TNG (as the Stargazer and the Battle Bridge IIRC) and a new bridge was commissioned. Herman Zimmerman, who had shaped the look and feel of the Enterprise-D with Rick Sternback and Andrew Probert, was hired as Production Designer and built a bridge meant as an a link between TOS and TNG. Memory Alpha cites the DVD commentary that the Helm Console, the turbolifts, the handrails and some of the platforms which the set stood, were the only things salvaged from the old bridge set. 

Star Trek VI, under Nick Meyer, would see the return of the gray tones and militaristic feels…..

‘Mad Men set design

I love what you’ve done with the place.