Mexican flag is full of national symbolism. The green strip represents the Independence Movement. The white stripe represents the purity of the Catholic faith. The red stripe represents the Spaniards that joined in the quest for Independence and the blood of the national heroes. The emblem-shield symbolizes the Aztec heritage.
Throughout skyrim you will go to the Riften fishery and see a woman (Argonian) - No hair. She will say she might lose her job due to a Skooma addiction and needs a Cure Desease potion, once she had this a Goal will come up saying Find out the source of the Skooma.
I found one on Skyrim Nexus that seems to work. There was nothing in a Sweetfx search on the Oblivion Nexus. I Googled to find the one I am trying now. Now to find something like Imaginator for Oblivion.