the article says "in certain markets". since the article is about asia, I would guess asia.
there are no code requirements in north America that require red. apparently, any colour will do:
“We always love to show off our colour customization abilities,” laughed Mr. Seaman. “It has proven to be a big plus for our clients that we can do that. We have shipped brown, blue, green, red, orange and even pink material. Cedar is proving to be a much requested tone for siding materials. Basically, anything our customers need, we can provide.”
