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.
One of the more practical bathroom floor tiles ideas involves using concrete tiles. They are durable, low maintenance and come in different colors and textures. They also give good grip and prevent one from slipping.
The painting procedure must be carried out carefully. It is advisable to use enamel paint for the shower tiles as they are highly water resistant and also resistant to frequent changes of temperature which are quite common for any bathroom.
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