This quote suggests that over time, people's real personalities and characteristics become evident. Initially, someone might try to hide their true self or pretend to be different, but eventually, their true colors shine through.
Think of it as a mask that someone might wear for a while, but as time goes on, that mask slips, and their genuine nature is revealed. This happens because it's challenging to maintain a facade or act like someone you're not for an extended period.
It's a reminder to pay attention to people's actions and behaviors over time rather than making quick judgments based on first impressions. People's true colors, their real values, and personalities will become apparent if you observe them patiently. This quote emphasizes the importance of being genuine and authentic in your interactions with others because, in the end, your true self will be revealed.