Mylar balloons — the shiny, helium-filled foil kind you see all over Instagram ... (And the most popular balloon colour is rose gold.) “Most people are going with the small letters, ...

LOS ANGELES (KABC) -- Metallic balloons are a big business in California, some 22,000 retailers sell them, bringing in more than $250 million in sales. "People come in here and they want the foil ...