The phrase "conservative colors" is correct and usable in written English.
You can use it when referring to the use of colors that are considered safe and tasteful, such as neutral tones or muted shades. For example, "The decorator opted for more conservative colors in order to create a harmonious atmosphere in the room."
Black is not mandated for clothing, although dark, conservative colors are customary, but more colorful garments, particularly for women, are common for the Sabbath and festivals.
Even more conservative colors are getting a new spin.
The idea is to buck the typical automaker tendency toward more conservative colors, said Sharon Gauci, G.M.'s color and trim design manager.
A sport coat and dress pants in conservative colors and a button-down shirt with, or potentially without, a tie might be perfectly appropriate for men in some environments.
Dressing up in dark, conservative colors to pose like the itehlati (secret service), Basiji, or undercover police, and standing outside the crowd of protestors waiting to intervene in police or Basiji brutality on civilians.
Again, opt for conservative colors.
If the site's fusty layout and conservative color palette were any indication, the American Girl people had no interest in trying to compete head-to-head with the blink-and-flash blitz that children encounter elsewhere online.
To keep your new car worth its money, buy it in a conservative color, such as black, white or silver.
Wear a tie in a dark, conservative color (never pink).
Make each individual item of clothing a conservative solid color (but the entire outfit may be different, though coordinated, solid colors for different pieces).
The only thing a young, urbane conservative of color can do, it seems, is wait out Donald Trump and hope that the Democrats, down the line, self-destruct.
