How to modify an instance

Question

I can duplicate an movie and I can change it and it is
different than the original which is fine.
But some have underlying movies..(usually a bitmap).
I try to change that bitmap, swap bitmap and it changes, but
the original main movie reflects this changed bitmap.
I guess I need to change the entire underlying group?????
1. how can I change that bitmap so it is different and
independent of the original.
ie. an item that has text, and when you hover over it, it
will display a star next to it as emphasis. I am just trying to
change the color of this star without affecting the original.
HELPPPPP??????????
Thanks
I assume

Answer 1

well there are some 'dynamic' ways to change the stars color,
but the simplest would be to make a duplicate in the Library, not
on the Stage. You will need to name it differently as well, see
each time you drag a new instance to the Stage, it's just that ...
and 'instance' of the original, any changes made to any 'instance'
of the original are reflected in all instances of it. So you need
to actually make 'another' MC that you can apply changes to.
However if this doesn't accomplish what you need to do, there
are other methods you could use to 'change' the bitmap within the
MC.