You might find it helpful to know that yellow is the favourite colour of the insane
and the creative too, hopefully
the site Della links to says
Light yellow is associated with intellect, freshness, and joy
how many windows do you have in the room? is there a lot of natural light?
"Under the roof" as they say here, wall sloping up to ceiling, with a big Velux window
maybe as you say "pale blue, or seafoam green would be calming and unobtrusive"
but I dont think I'll go for the pink ljbirns, interesting read though
thanks all for the tips, reading and wishes