you should post this on the discussions side. YOu've posted in the gallery where no one gives advice.

I've tried for the past few weeks to get used to the awful brown mortar on my flagstone, but I just can't live with the mortar......I've had multiple contractors come out for various things unrelated to the pool and 3 have commented on the "odd", "strange" mortar color without me even mentioning my opinion of it. Very shocking but really why was I surprised. It's kinda nice to finally realize I'm NOT crazy for hating it. It toned down slightly as it cured, but it's still hideous. :( I'm going to start working on a resolution, going to be a pain but I just can't live with this color......infurates me that my PB picked this color for me without asking me what I'd like. I'm sharing all of this in hopes that it will save at least someone from getting slapped with a bad mortar color----I've never seen a pool as far as I can tell that didn't have buff or just regular light gray mortar----so I had no clue to specify especially when all my my PB's pools looked to be to be a buff shade of mortar. All of their gallery pics and the 4 pools of theirs I visited.

You shouldn't rip it out and re-do it because that means you have to re-do the whole shower which means re-doing the waterproofing. That would be somewhere in the neighborhood of 6-9K. If you don't like that it will be permanently etched, ask a stone restoration company to come take and look and talk to you about what can be done. Your local fabricators will probably be able to give you some references.

From the photo it looks like 3/16".