So ya'll know my husband and I are remodeling a 1950s apt... well, I chose (what I thought was) a deep burgandy/brick red color and now that its on the walls it appears a dark brown! What can I do to lighten it and add the red tint I was looking for? I've considered a glaze or even a wall stencil.... this is the color... Olympic Granite D17-5
Personally I'd not paint anything brown! But definitely by adding some clever lighting facing upwards onto the wall (lights midway on your wall) you could brighten things up and get some red into that room. Either that or repainting which I'm sure will be a mission.
I'm afraid there is nothing you can do now except repaint with a new/correct color. Applying a coat of red-tinted glaze over the walls might add some red to the wall color, but it's not fool-proof and doesn't guarantee you'll be happy with the results.
So, just embrace yourself, get a refund for the paint, and start over.