I personally think that if you deny something or if you hide something you're inadvertently admitting it's wrong.
Actually, I wear the nail polish to hide how grubby my nails are.
Teach me to feel another's woe, to hide the fault I see, that mercy I to others show, that mercy show to me.
For years I'd thought my color was black: deep, dark, thoughtful, mysterious. Black, you can hide behind. But now I know it is red.
All of us make mistakes. The key is to acknowledge them, learn, and move on. The real sin is ignoring mistakes, or worse, seeking to hide them.