@kaktus, Most of my succulents are grown under roof or shade cloth.
It does not rain here frequently like in most of the Hawaiian islands, but when it storms I can have several days of intense rain which can rot the roots on my plants in less than a week.
For me the colors of most species is better under 30% shade.
Some plants demand full sun so I grow them under a clear Polycarbonat roof.
My Euphorbias, Agaves and Aloes do fine in landscaping with the rain.
