'rosy outlook' is correct and usable in written English.
You can use it to refer to an optimistic viewpoint. For example, "Despite all the economic uncertainty, she had a rosy outlook on the future."
The company's management also delivered a rosy outlook.
That explains the rosy outlook of shoppers and rising consumption.
In this context, Breyer's rosy outlook on the future of the Court could seem naïve.
The American chemical industry is crediting shale gas for a rosy outlook.
How many unfulfilled summers of recovery will pass before policy makers will adjust that rosy outlook?
But he might not be the best guy to give students a rosy outlook.
The software maker Adobe posted quarterly earnings on Monday that exceeded analyst expectations and provided a rosy outlook.
But personal optimism does not necessarily mean a rosy outlook about the nation and its path ahead.
All this makes for a less than rosy outlook and puts the eurozone still at the back of growth league.
Despite the rosy outlook, few executives in recent history have received such an overwhelming vote of no confidence from shareholders.
