White thinset mortar is a good choice for setting light-colored tiles, such as white, beige, or cream-colored tiles. Here are some additional benefits of using white thinset mortar:

• Visibility: If any thinset mortar shows through the grout lines, white mortar will be less noticeable compared to gray mortar, especially with light-colored tiles.
• Can be used with translucent tiles: White thinset mortar is a good choice for use with translucent tiles, as it will not cast a shadow through the tile.

Overall, white thinset mortar is a versatile choice that can be used for a variety of tile setting projects. Just be sure to follow the manufacturer's instructions for use.