I came to know a system where roses are colored with rainbow flowers. These 'Happy Flowers' were designed by Peter Van de Werken, who owns a flower company close to Den Bosch in southern Holland.

You can present your wife or girlfriend with a bunch of these flowers on Valentine's Day. The highly colourful flowers have been developed by a Dutch businessman who dyes each bloom in the colours of the rainbow.

The dyes are produced from natural plant extracts and are absorbed by the flowers as they grow.