OK, as long as none of the errors Conflict with the Road-System - You can come back to them later.Mostly 11, but a few of pretty much everything 1-20. Nothing bigger.
All over the file.
There are still 18 unique colours like there were before my edit.
You can Also assign the Greyscale Color 11 into the MapName.csv - which will Validate them as Acceptable.
Yes, The Game does a very good job of counting all of the Greyscale Errors!135,000 errors, lol.
But, it's good that this happened, so that you are now aware of this type of error.
Keep At It - You now know more than you did yesterday, and less than you will know tomorrow!
davinci