Somewhere, I still have the color callouts for the bridge up through the second season.
There was actually a very narrow color palette used throughout the
Enterprise standing sets. I can't recall the exact shades used off the top of my head, but I will give it my best shot.
Bridge colors:
The bridge floor. Two colors of carpet used on bridge. Dark gray for the upper level (console level) and light gray (a slightly warm gray, like camouflage gray) for the lower level, helm and captain's chair riser, and steps. These are the same colors used in the transporter room (light gray, floor; dark gray, steps to transporter chamber). The light gray carpet was also used in the corridors. The turbolift has green carpet.
Neutral (Primer) Gray (satin): All angled console panel surfaces - upper and lower, elevator cove, upper lighting cove, main viewscreen surround and accompanying side panels, hooded viewers (second season onward), helm pedestal and astrogator, captain's chair and pedestal, steps.
Black (satin): Console control panels and status readouts, helm console. chair backrests and cushions, Spock's hooded viewer (1st season only).
Dark gray: Upper consoles' viewing screen insets.
Pale Light blue: Viewing screen frames, chairs, intercoms.
Charcoal: Chair pedestals, bridge railing posts and floor trim under rails, perimeter edge of helm/captain's chair riser, step supports.
Red: Console control panel edge trim, upper light cove trim, elevator doors, bridge railing, helm console trim panels.
Dark Blue: Vertical inset strips in elevator door moulding.
Hope this helps.