Star Trek's Uniform Color Scheme - Did You Notice This, Too?

Star Trek's uniform changes have been noticed and commented about for decades. One that I'm not aware anyone else has taken note was in ST TNG the "gold" shading differences. I looked it up, and if Grok can be "trusted" (btw - NEVER trust an AI, always verify), confirmed that it wasn't my lying eyes, it was intentional per Thiess and Blackman.