If so that is because (in theory) the gems on the Calamity Box has these gems and when the trio were sent to Amphibia the gems went gray. Since then there have been two instances of Anne having a near death experience/needing to fight and hereyes have shined blue (the color of one of the gems).
Also her sword has glowed blue, an arrow she used has glowed blue, and her hallucination (theorized to be a power from the gem) had a blue aura.
Now Marcy’s eyes have flashed green (like one of the other gems).
That could only mean that Sasha eyes will glow purple.