Conditional formating in PowerBI Desktop

Hi, I am using PowerBI desktop. I have a line chart. I am able to display data points in it using shapes formating without a problem. But, they all show up as a chosen color, size and shape (which is understadable). Now, I want to display them in different colors based on certain conditions. How can I do that? Basically marker color under shape should be chosen conditionally.

For example: if the Sales Percent is >90, then color the Sales Percent data point as green dot, otherwise color it as a red dot. How can I do that? Any help is greatly appreciated. Thanks. Prashant-