just wondering is there a limit on the number of colours in a typical colour scheme???
THere is no one answer to this - it is a question, the answer to which is bound by time and circumstance, history and culture.
The Victorians didn't think so, and mixed colours, materials, decoration, themes and source objects reflecting the diversity of the Empire on which the sun didn't set, one that girdled the world.
The upshot of this for many people living today was a kind of gaudy bragadaccio - a confusion of colour and reference that seemed to end in a cacaphony of noise, rich beyond measure, but ultimately saying little.
Modernist Design rebelled against this, striving for purity of form and minimalist decoration, using beautiful materials with "natural" finishes in simple not complex forms, relating the few instances of decoration that were used back to to construction and details and joints used in the making of the building or work.
We have been 90 years coming back from this austerity and we're still not at a median point yet, with Tupperware Swoosh [a kind of 70's throwback on steroids] seeming to be in vogue at the moment if the success of Graft is to be believed.
http://www.graftlab.com/
Where we go from here - I don't know.
I'm reminded of Neo's final line in The Matrix:
"I am not here to tell you how it will end but I am telling you how it will begin. What happens next is your choice."
I foresee more and varied decoration coming into design, with eclectic extremes becoming more popular.

ONQ.