First step, push makers to stop branding things with older versions of the standard if the connector complies with a newer version. Just label that it works with older versions. Done. Rather than colouring the entire cable, just have a ring of colour or speed rating on the connector that disappears when you plug it in.
USB 3.0 and 3.1 gen 1 are blue, USB3 gen 2 was red or greenish. Just keep doing that. If 4.1 is the same as 3,1, keep that same colour. It works.
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