Along the lines of Attribute Driven Symbology
I would like to know in ArcGIS Pro or ArcMap is there a way to set the color of a line, point, or polygon fill by attributes?
Meaning, three columns
R G and B or Red Green and Blue
Ideally I would like to be able to designate a number 0 to 255 for each column and the symbolizer can automatically set the RGB values for those features.
example
Lake Ida is set at 0,0,255 and would fill at Blue
Lake Helga is set at 0,0,200 and would be a lighter shade of blue. etc...
In Pro you can set Transparency and Outline Width by an attribute
If you have access to ArcGIS Pro - have a read of these two links - you should be able to get up and running
Attribute-driven symbology—ArcGIS Pro | Documentation
Attribute-driven color in symbology—ArcGIS Pro | Documentation