What is the colour of love?

The thing that struck me most about my brief visit to Ankara in Turkey is colour. Made me think about colour as a conceptual framework.
Why is love associated with red, for example? For me, love is a wide array of colours and patterns, interweaving happiness and sorrow, joy and pain, forgiveness and hatred.
Why does this relatively poor country embrace colour with such fervour. Is it possible that the range of bright colours visually perceptibly enrichs?