Use Texture2D to create an array of Vector2 for Planar/Quad based Strategy Tiles

I did a lot of modding for Paradox's grand strategy games, and I like their semi-static provincial generation system, that being based entirely on building terrain from pixels. I was looking through the Script References on Texture2D and found that there is no functionality on how to find only pixels of a certain color and output their coordinates as a Vector2. The idea behind what I'd use these for is pretty straightforward, yet I need the Vector2 array before I can keep going. Any ideas on how I could accomplish this, or alternate methods I should pursue are welcome, thanks in advance.

Example sprite of what I want the texture data from:

 

Using GetPixels returns a flattened 2D color array of the pixels in the image. Flattened meaning it's a 1D array arranged row after row. You can loop through them to and find the colors and coordinates you need.

https://docs.unity3d.com/ScriptReference/Texture2D.GetPixels.html

Check this out for more info about flattened 2D arrays.
https://www.dotnetperls.com/flatten-array

 

Thank you for the reply. I was just about to update this thread, as I solved my own issues. Originally the editor hung on a for loop around the use of GetPixel, but after switching from a Color to Transperancy it began to function again. After that I made my own function to sort the vertices and read about Delaunay Triangulation for Concave Polygons. With the polygons working, I partitioned my map into smaller regions due to the instability of the holes, and it is all functioning correctly. If anyone wants my source, or the articles I read on Delaunay Triangulation, I will link them.
Only problem remaining is the UV, but I don't need a UV for my project.

Source File:


Finished Screenshots from Editor: