One of the projects on my plate right now is working with saltillo tile, which can be tricky. Its rustic quality and warm colors make it an attractive flooring choice. But damn! It's a lot of work. There are stacks of it everywhere in my studio.
You usually purchase this tile unfinished, which means you can stain it to match just about anything. You can use regular woodworking stains - like a Minwax, thinning it out with mineral spirits if the color is too dark. I usually mix up a small amount, like a half cup of thinner to a teaspoon of stain. And then paint a small section of the raw tile. Then add another teaspoon and paint another sample area. I repeat this a couple of times, and then the next day, when the stain is dry, I'll compare it to what I need to match. Once you know the right ratio formula, you can do the math and mix up gallons of the correct hue.
Well... that is the theory.
Unfortunately, it didn't work out that way. After staining it with what I thought was the perfect recipe, I felt like it looked a little too light, so I gave it a second coat.
Big Mistake. HUGE.
And I want this tile work to be finished!