You know how you can select individual colours? And you can go to the
select menu, and click
I need to do that but for a colour range.
Say for instance, you trace a photograph and expand it, and you want to remove a red stamp from the image (the expanded trace). You can select a red bit, and
select fill, delete, or paint transparent, or set opacity to 0%, but you're still left with bits and pieces of different shades of pinks and reds.
You can sometimes just reduce the complexity of the trace so there's fewer colours or whatever, but that distorts the whole image.
I've tried just selecting a range of colours simultaneously by holding shift and clicking objects with the selection (U) tool. but it didn't work that way.