This reminds me of a similar case between SparkFun and Fluke from 2014 where Fluke demanded that SparkFun stop selling their own multimeters which had the same colors as the Fluke brand multimeters.
Plenty of yellow multimeters (not Fluke copies) made outside the USA where nobody cares about their childish crayon hoarding. And people wonder why stuff isn't made in USA anymore?
https://www.sparkfun.com/news/1428