Krishna is known to be very playful and mischievous. The story goes that as a child, Krishna was extremely jealous of Radha's fair complexion since he himself was very dark.
One day, Krishna complained to his mother Yashoda about the injustice of nature which made Radha so fair and he so dark. To pacify the crying young Krishna, the doting mother asked him to go and colour Radha's face in whichever colour he wanted.
In a mischievous mood, naughty Krishna heeded the advice of mother Yashoda and applied colour on her beloved Radha's face; Making her one like himself.
Somehow, the lovable prank of Krishna where he applied colour on Radha and other gopis using water jets called pichkaris gained acceptance and popularity. So much so that it evolved as a tradition and later, a full-fledged festival. Till date, use of colours and pichkaris is rampant in Holi. Lovers long to apply colour on their beloveds face and express their affection for each other.
This legend is wonderfully brought alive each year all over India, particularly in Mathura, Vrindavan, Barsana and Nandgaon-the places associated with Krishna and Radha.
In fact, the entire country gets drenched in the colour waters when it is time for Holi and celebrate the immortal love of Krishna and Radha.