Different Color points in GeoMap for different values in a column

I am using GeoMap for visualizing two types of values in a column. But I am only able to use color scheme as Threshold (by values) when I want to show both of the values in the column.

Is there any custom method where I can assign different colors to different values without using Threshold option in GeoMap?
NB: I am using Postgres SQL DB as Data source.