Changing Fire Extinguisher Colour From Blue To Red

I started working for a fire extinguisher manufacturer since i graduated from local U, back in 1993.
Then, fire extinguishers were mainly blue in colour, of course some are black, some are red and some are pale cream in colour.  In was very interesting though, with all the different colours.  However, some will say that it is confusing, and just can't figure out which one is for what.
Then came the new regulations to unify everything to red colour, some call it fire red, some call it signal red, but the industry standard is RAL3000 red, according to the RAL colour chart.
RAL is a collection of 40 colors invented by the German Reichsausschuß für Lieferbedingungen und Gütesicherung" (State Commission for Delivery Terms and Quality Assurance) for reference.
To learn more about RAL : http://en.wikipedia.org/wiki/RAL_(color_space_system)

I was told by some industrial seniors that all extinguishers were red, before they were changed to blue (and other colours, of course).  So, we had RED, then BLUE, then RED again now.