Personality? I thought if the sims used the chemists set they would get a perfect personality? where do I go wrong?
They must drink the yellow potion to achieve a "perfect personality", and their personality in all fields before that must be zero. What the yellow potion does is reverse personality points; for example, a Neat score of four will be six after drinking the yellow potion, or an Outgoing score of seven will be three. If all the points are set to zero before drinking the potion, they will all become tens after the yellow potion is drunk by the sim whose personality you wish to change.
Hmm, I have a zombie sim, and all he can make is blue potions. Makes him happy, but I want him to have a personality again (sniff).
Keep trying; you may think that all your sim can make is blue potions, but blue's just the most common and shows up more than the others. If you want to pick a specific colour potion for your sim to make, you can get one at www.thegamershq.net/fusioncreations . Yes, but they can get them back through things like the crystal ball and chemistry set. Though you can get back a zombie's personality points, I don't think there's any way to get rid of that blue skin!