He symbolizes divine music that depicts the call from the Lord, inviting every creature to His abode with His flute symbolizing a human heart, which is made hollow, hence, it is made free from worldly desires.
The aesthetic, theological belief is carved with perfect fineness into temple wood to form an outstanding model of Krishna with his flamboyant aureole of peacocks, the hue of blue and red swaying and blending itself within the structure. The melody of Shri Krishan's tune makes the colors more vibrant pleasing the eyes of the observer as he is bewitched in the amazing vivid imagery incredibly created by the craftsman.
He is the deity who is known for his qualities of bravery, manliness, determination, the ability to deal with difficult situations, of stable mind, hence, the blue color represents the depth of his character. Moreover, He is the ideal of divine love, therefore, He is the God of love.