I did a striped wall in my kitchen using a deep red flat paint and the same color but high gloss. Now I want to use that color to accent another wall but I don't want it super flat or glossy. Can I mix the paint equally for an in between semi glossy look? Thanks Steph

I wanted to do that last year as well when we were painting our kitchen.
I asked our Benjamin Moore "expert" and he had said that even if you mix it really well you will still get patches of spots that are shiny and some patches that aren't.
I wouldn't do it just to be on the safe side.
I hope that helps.

It is the patch of wall that runs around the top of my cupboards next to the ceiling

I prefer the gloss for the kitchen. It is easier to wipe up. Up where you are using it is where it will get the greasiest but cleaned the least.

I don't see a problem with mixing 2 sheens of paint. Infact, the professional painters would do that if we were short on a certain sheen that they would want. You just have to make sure that you use latex with latex, or oil with oil. Never mix the two! In all of the books I've read for problems with paint, I've never seen anything about "blotchy spots" like what your "exert" had said. You can purchase different sheens. Were you just asking because you had paint of the two sheens left over?, or were you planning on going out to get more paint? The sheen levels are: flat, eggshell (or also called velvet), platinum, pearl, semigloss, and gloss. I think that's the proper order. The flat is not too washable, the higher the sheen, the more durable it is. And oil paint is again more durable than a latex. Sico also has another line of paint called "Cashmere" which is like a flat, but has a softer feel to it and is alot more durable, and also a "Chamois" which has a bit more sheen to it, not like a semi-gloss, but is extremely durable and is intended for kitchens, baths and high traffic areas because it can be scrubbed if needed. And a great thing about these 2 paints are they are a latex paint that can be used directly over walls previously painted with oil, without having to use a primer.

If I were you, I would go to another paint store and get a second opinion. That "expert" may not have really known and just gave you his opinion, and not a researched answer.