Pursuit thrusters

[Synistor]

Since the boost action on the tie se bomber is red is the system phase boost red or white?

[Kris M]

The action is white.

From the Rules Reference:

Q: If the difficulty of an action is not stated (such as Lando Calrissian's [Rebel, crew] unique action or the coordinate action “Vizier” [TIE Reaper] can perform as part of its pilot ability), what is the difficulty of that action?
A: White. However, note that if a ship is instructed to perform an action “on its action bar” this way, it uses the difficulty of the action on its action bar.