Change a visitor's name to any of the following for the desired effect: 

Mr. Blue - Changes Everyone's Shirt to Blue 
Mr. Blonde - Changes Everyone's Shirt to Yellow 
Mr. White - Changes Everyone's Shirt to White 
Mr. Brown - Changes Everyone's Shirt to Brown 
Mr. Green - Change Everyone's Shirts to Green 
Mr. Orange - Changes Everyone's Shirt to Orange 
Mr. Pink - Changes Everyone's Shirt to Pink 
Mr. Purple - Changes Everyone's Shirt to Purple 
Mr. Violet - Changes Everyone's Shirt to Violet 
Hawaii - All guests'shirts will turn in hula shirts 
John Wheeler - All Animal Shelters Available 
Hank Howie - Researches All Zoo Staff Research 
Steve Serafino - Unlocks all of the endangered animals 
Andrew Binder - Unlocks all of the animal houses 
Akiyama - Unlocks all of the scenarios 
Lou Catanzaro - All animal toys 
Adam Levesque - All animal care programs 
Bill Gates - Get higher donations 


Submitted by CoolGal at larck.net