Here's a few things I've learned so far =>
The two samples on the left are custom made efforts that for different reasons can't be used (one for a very obvious reason)
Then the third from the left code 70 which is often called red turns out to be an orangey gold!
Code 46 as shown in the pictures on the previous page is a deeper red - almost burgundy
Code 155 signal red is a bright bugger and could very well be the original colour my PV was repainted in but after being left outside for a few years may have changed shade a bit.
I'm being sent another red for testing - I'll add that to the metal scrap later on