Marriage means sacrifice. Sacrificing your desires for the good of the other and for the sake of the whole family.
Sometimes you need to sacrifice your desires for others but those acts of sacrifice will definitely pay you back.
There are different colors associated with our feelings and emotions: anger with red, jealousy with green, vibrancy and happiness with yellow, love with pink, vastness with blue, peace with white, sacrifice with saffron, and knowledge with violet. Each person is a fountain of colors which keep changing.
Every creature has the right to live. It is not prescribed anywhere in our scriptures to offer animal sacrifices to please God.