Posted: Aug 11, 2017 1:58 pm
by DavidMcC
GrahamH wrote:It would help is you watched the video.
https://youtu.be/VIg5HkyauoY?t=19s for rainbows without blue. It's only 19s in FFS.

...

I did watch much of it, but found it not to be very enlightening. :(