This question about the significance of laser colours in Star Wars was closed as a duplicate:
And this is the proposed duplicate:
Now, if you carefully (or at all) read the questions, you will see that the now-closed one is asking about behind-the-scenes ("what is the significance") while the other one is asking for the "quality of gas" retcon.
The answers to the older question do not address the out-of-universe either, as far as I could tell.
Did I overlook something?