For some reason, any clothes worn by my colonists at the start of the game (pictured includes synththread and hyperweave) turn white when removed (or stripped from corpses). If the dropped clothes are put back on, they remain white. Logs and Mod list attached, plus a screenshot of a test game. The white clothes were originally synthread, but when Tim stripped that corpse, they turned white. I removed his jacket and made him put it back on, but it also turned white.
[attachment deleted due to age]
[attachment deleted due to age]