Drowning - light blue, dripping water effect
Old age - light grey
fuego - orange
Electrocution - Yellow, electric currents through it
Mummy's curse - black/white
Blunt force trauma - red
Ranting - green, letters and symbols coming out of it
tiburón - blue/ rosado, rosa
Human statue - dark grey
Watery grave - dark blue
Meteor - orange/ black
gelatina, jalea frijol, haba - purple/ black/ blue
Haunting curse - black/ green
Future urnstone hologram - don't know, will update soon
Time anomaly - VERY transparent light blue
Transmutation - gold
That was a lista of all ghosts and their colours in The Sims 3 . If I have missed any o made a mistake, let me know and I will editar it as soon as possible.