Cassiopeia's E should visually critically strike if the target is poisoned

Hey, so I was just thinking about this the other day.

When some AP champions use their 'empowered' abilities (e.g Fizz's W, Ryze's Q, LeBlanc's passive) the damage is displayed as a purple 'critical strike' for clarity purposes. I think this should be the case too for when Cassiopeia hits her E on a poisoned target, for clarity's sake; especially since sometimes you can't be exactly sure on whether the E hit the target before or after the poison expired.

That's all, just a visual suggestion that I think would help.