What color scale to use for heat map with positive and negative values?

I am trying to see what the most intuitive or most conventional color scale would be for a heat map with values that can be either positive or negative (percent difference from expected).

e.g., -50%, 0%, 50%

Scales I'm considering are:

• Blue for negative, white for zero, red for positive
• Red for negative, white for zero, green for positive

I think it makes sense for zero to be white because it's important to know that something is neutral in this case.

I like blue-red because positive doesn't necessarily mean good in this case; however, red indicating higher also might feel counter-intuitive.