Hello Paul Edstein,
The original text of a pleading must be in black.
When you want to amend a pleading, where the court (I'm talking about the law of England and Wales in the U.K.) requires the old and new text to be seen together, the original deleted text must be shown (in black) [no need for the rule to say the original is
in black because we know this] with red strikethrough, and the new text in red.
If you go to a further amendment, this is termed Re-Amendment:
If you are amending the amendment, then any deleted amended text must be shown (as it was) in red with green strikethrough, and any new text in green.
If you go to a further (third) amendment, this is termed a Re-re-amendment:
If you are amending the re-amendment, then any deleted re-amended text must be shown in green (as it was) with purple strikethrough, and any new text in purple.
I hope that I have now explained that for any deleted text by formal amendment, the previous colour STAYS and the strikethrough is shown in the required amendment colour.
I hope that I have now explained that the original text is always in black and the first amendment strikethrough must be in red.
The wording of the rules does assume legal training.
I hope this helps.
Regards,
Ray333