color absorption in the first trials

[octanetry]

hello I am going to make you the second question probably trivial as the first but after many hours of practice do not yet understand how to use the light of day. 
my scene is composed of several objects illuminated by the light of day, including a white wall. 
I want the white of the wall does not reflect the light blue of the sky. I assigned it a diffuse color. Thanks

[gabrielefx]

hello I am going to make you the second question probably trivial as the first but after many hours of practice do not yet understand how to use the light of day. 
my scene is composed of several objects illuminated by the light of day, including a white wall. 
I want the white of the wall does not reflect the light blue of the sky. I assigned it a diffuse color. Thanks

create a white glossy mat with slight desaturated orange-yellow reflection.

[octanetry]

ok, now I understand how I can do .
I thought there were other tricks .

Grazie Gabriele e complimenti per i tuoi lavori..