It started as a sketch. But Michael Urie believed Drew Droege’s riff on gay weddings was more than stand-up shtick.

“I thought, ‘This is a full play with an idea, and it’s hilarious!’ ” Urie tells The Post. And so the “Ugly Betty” star, who recently toured in the one-man show “Buyer & Cellar,” offered to direct what turned out to be a very funny play, “Bright Colors and Bold Patterns.”

After a brief run in September, it returns Thursday with Droege — best known for his Chloë Sevigny parodies on YouTube — playing a coked-up member of a wedding whose guests are asked to refrain from anything but muted colors.

“Drew is actually a very kind and gentle person,” says Urie, who recently reunited in Texas with his “Ugly Betty” co-stars. Is there a sequel on the way?

“Oh my gosh, we’d love that so much,” he says. “We’ve tried to get Hulu to produce a reunion, but it hasn’t yet materialized.”

For now, you just might catch him at the Barrow Street Theatre, watching “Bright Colors.”

Thursday through Dec. 30, 27 Barrow St., at Seventh Avenue; BarrowStreetTheatre.com