Q: What do the different colors mean when discounting an item?

A: When you apply a discount, the sales price changes color to indicate the margin you are still making on the product:

• Green: You are making between 75% and 100% of the target margin.
• Yellow: You are making between 25% and 75% of the target margin.
• Red: You are making 25% or less of the target margin.

https://www.youtube.com/watch?v=-hWJM2QgQ5I