A tipster just shared a mockup image of all the colors OnePlus was considering for the OnePlus 9 series but got axed in the end. We say mockups because the colors shown below are based on live images, which for privacy reasons, were not shown.
The colors in question are Matte White, Glossy Black, Glossy Silver and Glossy Green. The tipster doesn’t say which ones were considered for the vanilla and which ones were assigned to the Pro.
The Glossy Green color seems like a glossy variant of the Glacial Green color that the OnePlus 8 series launched with. There’s also a slim chance that one of the colors above would make it to the 9T family (or just the one 9T) this fall.