On Nov 4, 10:18*am, N8N wrote:

It's not at all, that's the problem. *I've had three different batches
of paint mixed and only one was close enough to even try putting it on
the wall, and it is clearly different - patches look like shadows.

What sheen paint? Sheen differences can look like shadows or
different colors when it is the reflectance that is the difference.
Flat paint is the easiest to match on walls.

R