"super bright" is correct and usable in written English.
You can use it when you want to emphasize brightness, e.g. "She was wearing a super bright neon shirt."
Being super bright helps; so does his superior knowledge of art".
"It's a bedside light, but it blinds you — it's super bright".
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The studio was so sunny that, "in the summer, we had to go to the back to stay away from the super bright light," Ms. Solomonoff said.
He is, says one ITV producer who worked with him at the Euros, "super bright, not the man you think he is".
Born into the right family, go to the right schools, even if you're not super bright to start with, you'll turn out bright.
She's clearly super-bright.
And then there is Cecilia's super-bright younger sister Briony, with a secret crush on Robbie.
Amanda was super-bright, winning a scholarship to the prestigious Seattle Preparatory school.
And Tyler, yeah, he cries a lot, but he's super-bright.
Meanwhile Marni – home of the wonky bold print – went super-bright.
