Its possible to get swatches of the materials under consideration, and then set them in your space. Whites can be very subtle, so that allows you to consider the choices, in your own home. Get Corian sample(s); some white tiles, etc. and see how they look. In one of our bathrooms, we have a double vanity with Corian integrated sinks and its terrific. Good luck finding something you like!

No, Corian doesn't look funny with a shiny wall tile.

It's hard to beat the big boxes when it comes to pricing solid surface. They get discounts from DuPont and pass them on to their fabricators.

I did like Joseph did on the vanity and for a shelf in the shower.

The hole is for a power cord for an electric toothbrush. There is a GFI outlet below. In the first bathroom, the cove is thicker than the tile. In the second, we were able to make the cove exactly the thickness of the tile for a smooth transition.

All the bathrooms in DD"s house have Corian and also have shiny tile walls. It looks fine.

Look at Glacier White as well. It's a good "white" that works very well with their sinks.

I am doing a white corian with integrated sink and backsplash in my son's bathroom. I will pick the white corian that goes best with the white tub, toilet and tiles.