Avoid Auras from reshading each other? (Showing World Map Borders in real time)

TLDR: I'm trying to figure out how to have auras (of the same colour) overlap each other without changing the colour where they meet. I have a world map where I expect the territories to be changing hands between different empires as the campaign goes on. I want to represent this by colour tinting the lands to represent X faction, where I can then edit and change the borders via roll20 as the events transpire. So far the most efficient way for me to do this is to make tokens on the Dynamic Lightning layer give off an colored aura, so where the colored aura covers is the controlled land. However, territory is rarely going to be exact circles, meaning I may need a few tokens at one time to represent an empires land mass. But what happens then is the two tokens auras meet, and their colours merge, creating a different shade altogether. I'm trying to avoid this, and keep the shade all the same color. How would I go about doing that? Note, I'm using transparent tokens for this. Below is an example of what it currently looks like, and what I'm trying to avoid.

First, terminology. Auras are something else entirely from colored light. Just to avoid confusion for anyone else following the thread. Auras are areas of plain, translucent color that are not part of the DL system. They won't overlap well for this purpose either. Secondly, I don't think this is easily achievable. I think the best you can hope for to achieve this effect is to ditch tinting the light (this is quirky, and rarely behaves as expected), and instead use regular bright light and Explorer mode. Bright light doesn't typically multiply intensity with an overlap the way dim or tinted light will, and Explorer mode will keep a dim, grayscale version of the map showing where the light is absent.

In light of those great points from keithcurtis, My thought process says the best Roll20 tool to do these changing & overlapping Nation/Territory borders would be the Drawing Tool (the freehand tool, or preferably the Line tool, can also make a Circle or a rectangle). If desired there is a trick way to set a Semi-Transparent fill-color using the Shape/Drawing tools and the hex color field.  Otherwise just use Outline. Advantage: Doesn't have to be Circular, but can easily be circular.  Unfortunately: Overlapping borders will still appear to criss-cross. Workaround: With the drawing tool you could easily Delete and redraw a border, so-as to account for new intersections. 

Another option with DL is to simply use barriers on the dynamic lighting layer and rely on Explorer mode to make the "unexplored" part persistent.

Or take advantage of the "defect" and make the overlapping areas regions in dispute or a "no-glort's-land".