"We all REALLY, REALLY want bright orange smoke so our flights are distinguishable"

Wasn't there a company called Kell that claimed to have motors with colored delay smoke back in the late 1960s? IIRC, they were demoed at NARAM-10. My first NARAM was 11.
Any denser or colored smoke would be great if it can be A) cost effective and B) repeatable.

We'll give you a week. Sure wish I had my Gilbert Chemistry Lab from the mid-60s...

Chas