One of the galleries I went to while in London was the Wellcome Collection, where the exhibition 'Death: A Self-Portrait' was showing. Although quite a morbid exhibition, I took away quite a lot especially how the artists used colours to portray their thoughts on death. The South American/Mexican artists tended to portray death with bright reds and yellows, in order to celebrate the deceased's life. Where as the more European artists tended to use very dull, and bland colours to show more the intimate feelings that surround death.
South American 'shrine' commemorating death
You can see how the artist has used more dull and subtle colours even when using reds and yellows.