What color boost does Kylo execute with Extreme Maneuvers?

As I read it Extreme Maneuvers is a 1 force cost to execute a white boost. It is not a purple boost.

Therefore, if Kylo uses Autothrusters to execute a hard boost using extreme maneuvers he spends a force to execute a boost which would be red due to the card ability. Is this correct?

I can't find an Extreme Maneuvers card image so as a refresher: "While you perform a (boost) action, you may spend 1 (force) to use the turn (hard left or hard right) template instead."

Because extreme maneuvers does not specify a color one would usually think it is a white boost.

However, extreme maneuvers isn't granting a boost action,it is only changing the template that you use. This means that whatever the colour of the boost action without using EM is the colour of the action while using it.

If you put EM on a ship with a red boost action it would apply the same way: EM is taking the boost and changing the template at the cost of a force, but it does not affect the color of the action.

@SwampyCr is right that Extreme Maneuvers doesn't care about the color. Spend a force, change the template of the boost. The color remains "normal." White if done with Kylo's normal action, Red if done using Autothrusters.