Ok this was not clear to me.
I thought that responding to a memory would make you a challenger anyway. Maybe it’s just me but I’m failing to see that in the way memory is written.
Another can respond:
“But I envied you…”
By using two separate verbs you can make it clear that only the second options entails a challenge.
I think it depends. I can certainly see how a group of people that really buys in the flavor of the game will go for that. I’m focusing mainly on what the system itself says though. I believe the perfect system is the one meant to be exploited, because it is designed to be exploited in a very precise way.
So from a purely mechanical stand point, becaue all the black becomes red, I would put a load of black on the mask if for some reason I wanted to stop narrating my sad tale of loss in order to rage. But If I wanted to rage, why didn’t I smear all my mask red in the first place?
In short: the intention behind the amount of red is clear to me: more red = faster rage.
Black needs to have its own purpose, otherwise looks just like a small pause in the narration.