Well, I have never heard of someone
being in a white cloud.
I have heard of being in a
pink cloud
thinking is foggy and colored rosy)
After going to a few sessions of therapy, she was in a pink cloud of recovery and wanted to talk to everyone about not using drugs.
and
head in a cloud. (to be real dreamy, dizzy, not connected to real life)
His head was in a cloud after seeing her.