Orange and red heathens with glowing dot over head

Hey guys!

I decided to open this topic as I couldn't find an answer anywhere.

I already converted all the blue masks. While converting the last ones of them I used the fog of doom. As you are unable too see what you are doing and all the heathens were gathering together, I just kept dropping my little person in there to tell them the truth. It turns out that when the fog vanished I had all the blue ones plus 2 oranges and 1 red with the dot over their heads.
I did it again when the dot disappeared and it worked once more. I tried one more time when the dot disappeared, but this time all my blue ones were gone, so I had only the oranges and reds left. I released the fog, dropped my devotee over them over and over again and nothing happened.
Question is: what have I done the first time? *lol*
Anybody has a clue? Thank you!

Maybe if the earth were shaking, it would make an impression on them?

Thank you Barbara!!! I have to wait a while for that - I still haven't got that power!
But I really wanted to know how I managed to make the yellow ones and the red ones think without the earthquake, just by talking to them. Maybe my devotee was too persuasive!!! *lol*

Thanks again!

The fog is useful, too, but that's not the only (or necessarily the most effective) way to convert the heathens.