If the color of the tile loses its original brightness, you can easily change the color in the following ways:

1. Use cleaner: first clean the surface of ceramic tile to make it clean and dust-free. Then soak or spray it on the tile with tile cleaner, and clean it after a period of time. This can help to remove dirt and effectively restore and improve the surface brightness of tiles.

2. Apply new enamel: Covering new enamel is one of the easiest ways to make black and white tiles show color difference. Prepare new enamel, choose the color suitable for your home decoration, and transfer it directly to the tiles according to the instructions.

3. Use tile stickers: You can also use the texture of tile stickers to personalize tiles. Just choose the sticker pattern you like, and then stick the sticker on the surface of the tile.

It should be noted that before any operation to modify the color of tiles, you must carefully check and follow the product instructions, and test the tiles to ensure that the selected solution matches your tile type and material.