1. Transformation: It can mean to transform oneself, to become a different person, or to change one's personality or character.
2. Deception: It can also refer to deceiving someone, to change one's appearance or behavior to mislead others.
3. Change of heart: It can also be used to suggest a change of heart or a change in perspective.
4. Change of situation: It can mean that the situation has changed drastically, or that the circumstances have taken a new turn.
Examples:
* "Tumhara rang badal gaya hai" (Your color has changed) - This means you have become different, either in personality or behavior.
* "Usne apna rang badal kar mujhe dhokha diya" (He changed his color and deceived me) - This means he pretended to be someone he wasn't to mislead the speaker.
* "Rang badal gaya, ab kuchh nahi ho sakta" (The color has changed, nothing can be done now) - This means the situation has become irreversible.
The exact meaning of "rang badal de" depends on the context in which it is used. It is a common phrase in Hindi, and its meaning is often understood implicitly by native speakers.