Put a new/different complexion on something
Definition 1 of 1
Pro Tip 1/3Metaphorical Usage
This phrase is used metaphorically to indicate a shift in perspective, not a physical change in appearance. 
Her apology put a new complexion on the situation, and we decided to give her another chance.
Pro Tip 2/3Neutral Tone
The phrase itself is neutral and does not suggest whether the change in perception is positive or negative. 
The whistleblower's revelations put a different complexion on the company's public image.
Pro Tip 3/3Figurative Meaning
Understand that 'complexion' here is not about skin tone; it's a figurative term meaning aspect or appearance of a situation. 
The new evidence put a different complexion on the entire case.