What she does in stressful situations shows one's true colors.

When one is pushed to the limit, one has shown one's true colors more often than one would like to admit.

Despite the clear flaws, he still chooses to wear rose-colored glasses when evaluating the project's prospects.

She wore rose colored glasses and ignored all warnings about the project's risks.

Even after the meeting revealed the problems, she wore rose-colored glasses and insisted everything was fine.

Despite the obvious warning signs, she still wears rose-colored glasses when she thinks about his track record.

He kept defending the plan, wearing rose-colored glasses even as deadlines slipped and costs rose.

To show one's true colors is often the last thing someone does when their mask slips.

Faced with growing pressure, the committee voted to nail one's colors to the mast and publicly endorse the policy.

When she insisted that smoking indoors was fine, I couldn't help but ask what color is the sun in your world, given how detached from common sense her argument was.