Franz, Please don't post these teaser-articles that tell us to go to another site if we want to read the rest of the story, when that other site requires us to pay for a subscription in order to read it.
Monday morning's rise was a temporary blip. On Friday, Tesla's stock fell from $355 to $334. Monday morning's blip raised it, but only to about $340. Then it steadily fell all day Monday and Tuesday. Today it closed at $328.But this might be a sign of things to come when (if) the electric Ford pickup truck goes on sale.
What are the other reasons for it to change colors?