How to customize color in SSRS Map Component

Hi, I have a problem using custom color in ssrs map component.

  Right now, I have a table called "States" (All US states), now each state has a risk level, for example, Alabama, HighRisk, California MediumRisk, New York LowRisk and Alaska is NotApplicable, Now the requirement is All the HighRisk states should be colored as "RED",all the mediumRisk states are colored as "Yellow", LowRisk states with "Green" and NotApplicable States should be "White".

  I have tried so many ways to custom the color and none of these work. Please help!

  Thank you