Yup. Up here it was known as the "brownalator switch".
Everyone eventually came up with an auto color scheme.
I always turned them off & touched things up for the content.
Dont know about the CRT. The only development around
that time was Zenith chromacolor black matrix CRT's. IIRC
Maggy used RCA jugs as a rule.
73 Zeno
LFOD !