If it really is too confusing though then switching back to the original blue colour would be the best solution.
I really like the concept of the UI visually changing when in low power. I will have to think about what triggers a low power status though! Maybe one of the Power Presets is specifically for a low power configuration (we could call it "Silent Running" ), and it has it's own low power colour scheme which gets applied to all of the station UIs on the ship (as a way to signal to everyone that the ship is in "silent running"/low power mode).
That could be really cool. Maybe even enemies' radar would struggle to pick you up, like stealth mode. Or you simple conserve more power that way, which is useful for travelling across vast regions of space where you don't need to constantly accelerate.