Create sample data sets for conversion verification

[starturtle]

Currently, only using the program and asking oneself whether the result looks good is available to test the algorithm overall.

There should be input/desired output pairs available for testing.

Most likely, this will spawn rethinking of the distance algorithm.

[starturtle]

Output currently doesn't look good. What if it makes sense to also provide/suggest some prep work?
Regardless, Some of the color selections really spawn the question what colors should be seen alike.