Toilet wall tiles tend to be small, the same coloration or monochromatic and possess light-colored grout- the actual decorative cement between the edges, which is usually difficult to thoroughly clean.
A dark grout might seem different, but so long as you don't look for a grout that is usually so dark this looks black, you ought to be fine.
Dark colored tiles can make an already small bathroom appear smaller. Good small bathroom tile ideas include using light colored tiles. That does not mean that you have to use only white tiles. Beige and pastel shades will also work fine. The advantage of light colored flooring is that it reflects light and makes the room appear spacious.
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