Thank you Sassi!
You have helped me many times over the years with this type of task, and I often go back to these techniques you shared, but as you said, it would be good to have this all wrapped up in a tool.
There are issues of blending, luminance calculation, aspect ratios, etc...if someone could just enter all this data into a simple UI and see a result on some geometry, it would really be super duper helpful.
Thanks again!