The spandex jumpsuits of the early seasons eventually gave way to the classic two-piece high-collared uniforms. The departmental colors—Red for Command, Gold for Operations/Security, and Blue for Science/Medical—remain a staple of the franchise's visual branding.
The "image" of TNG is built upon several distinct design pillars that are instantly recognizable to fans and casual viewers alike: Star Trek: The Next Generation image
Star Trek: The Next Generation (TV Series 1987–1994) - IMDb The spandex jumpsuits of the early seasons eventually
The following images capture the essence of the show, from the main cast to the iconic ship and alien encounters: Gold for Operations/Security