color emotion (known also as color psychology) is based on the human feeling that a color evokes.
This is also known as color meaning or symbolism 1)
You should always consider the context. For instance, red is regarded:
With this knowledge and the different color pallette, you are ready to create beautiful and meaningful theme.
Red:
Pink is regarded widely in the western world as the color of femininity.
Pink:
Located in the visual spectrum between the warmth of red and the optimism of yellow.
Note that the temperature of a color evoke different feelings: