This is for your newly acquired blue goose pads i take it
I'd be careful mate - they look pretty good if maybe slightly faded. I'd try maybe washing them gently by hand in cold or luke warm soapy water - you don't want to lift the print
Maybe just try washing them with a soapy sponge - avoiding the graphics first.
There has been some success dying padsets to bring them back to life and / or change colour !
But I don't think yours are in the sort of state where you need to revert to that !!!
Look at it this way - when they have the "survivor pads" look then they also have the "genuine pads" look
