my thinking is that since my house has plenty of sun, no tree shade, white is probably the best color and I see that Sherwin Williams white color with highest LRV is extra white. I may ask for additional white pigment as tint (2-4 oz per gallon) to improve hide.

the problem with white as opposed to grey, which I am also seriously considering, is that dirt shows up on it very easily.

I just recently learned of Sherwin Williams Emerald Rain Refresh and as I live in the Midwest, it does rain on a regular basis, in fact its raining now.

I like the idea of self-cleaning paint, in this case paint that sheds dirt when it naturally rains.

So my thinking is to paint my house white and when it gets dirty looking, regular rain from the sky and weather will clean it, with Rain Refresh.

Sherwin Williams says Rain Refresh is their top of the line, as good as Duration for longevity.

I'm also thinking of just 1 coat with Rain Refresh, estimate of 20-25 gallons for my house with 1 coat, since it is a premium product.

Do you have any experience with Rain Refresh, and is it as good as advertised? So I'm thinking of white paint with Rain Refresh.

If I choose grey color then I don't think I need Rain Refresh. Maybe some other product, maybe Duration or Superpaint