The phrase "a blue rain" is correct and usable in written English.
It can be used in a poetic or metaphorical context, possibly to describe a scene or emotion associated with the color blue and rain.
Example: "As I stood by the window, I watched a blue rain fall softly, painting the world in shades of melancholy."
Alternatives: "a cerulean downpour" or "an azure rainfall".
On the boardwalk, Wittenberg, who had donned a blue rain jacket, greeted the finishers as they stumbled in.
Miriam looks giddy in a blue rain poncho on the Maid of the Mist boat ride to the Horseshoe Falls.
A blue rain was falling through the street lamps and at the Korean deli on the corner a crippled man leaned on a wooden cane, picking through a pyramid of oranges.
"She said she knew about the violence," says a man in a blue rain jacket, darting in and out of the periphery of the horde.
Carl tried on a dark blue rain slicker ($800), which looked crisp and professional on him, while I coveted a $325 Yorkshire tweed jacket with pleated pockets, wishing I had married a loud, drunk banker so I could buy it.
I draw our group logo on Michael Muller's blue rain poncho--a bearded.
"For us, the forest is like a pharmacy," explained Mr. Callera, 38, his blue rain slicker soaked.
4) Out Of The Blue (Rain) (4.47) Piano led, interlaced with a droney backdrop sound.
This detail illuminates the line in Cohen's song "Famous Blue Rain Coat," "Did you ever go clear?," an explicit reference to Scientology that until now was always opaque to me.
In another contemporary department — I think this is the one where mothers can be entertained while their daughters shop — an electric-blue Elie Tahari jacket ($648) with a swirl of steel buttons was very '80s, I thought, something that Prince might have worn during his "Purple Rain" days, if they were "Electric Blue Rain" days.
Closer Crying Blue Rain is, unlike anything else here, poised and rich.
