All my pieces are ordered with blonde hair ...even though my
natural hair color is Dark Brown ...

My stylist dyes them ....matches my side hair perfectly ..
and only applies a tiny bit of dye to my natural hair on
the right where there's these straggler grey hairs ....

And the knots blend in perfectly with my scalp ...
because they are blonde ...

Now .. would I attempt this on my own ... ?

Not really ...With my artistic color skills, I'd probably look
like a zebra ...

Does the piece have to be redyed in the future ..?

Yes? The color starts to fade ... depending on the person ... seems
like between 2-4 weeks and then there's a slight discrepancy
in color between my natural hair and the piece .....

(of course .. you can use gel in the interim ... and the
wet look hides a lot of flaws).