Below are some detailed photos of a 6" x 14" control panel that was used as part of Mr. Spock's library computer workstation aboard the refit Enterprise NCC-1701 starship in Star Trek: The Motion Picture (1979); the first appearance of the Enterprise and her crew since the completion of TOS production in 1969. As seen in the screenshots from the feature film that follow the modern day photos; this panel was backlit so that its 90 transparent dome shaped control buttons would appear a light green in color surrounding the single red control button. This panel was also screen used in Star Trek II: The Wrath of Khan (1982) as the design of Spock's workstation remained virtually unchanged for that production.
The panel as it appeared in Star Trek: The Motion Picture ...
and as part of the science station in Star Trek II: The Wrath of Khan ...