The original Startrek had brightly colored sets and was well lighted. It had that 60's look.
Startrek Next Generation had darker sets and more subdued lighting.
Startrek Voyager was darker still, giving it an air of mystery.
Now, if you dare, visit the bridge of the ultimate Startrek, Startrek Totally Black. Black sets. Black uniforms. black instruments. Black lights. GO BEYOND LIGHTSPEED!