Devotees say it resembles the hue of Krishna's skin and it looks like He is holding the Sudarsana chakra!

It really does look like a hand with a discus, doesn't it?
"The almighty Personality of Godhead, Śrī Kṛṣṇa, having observed that a great danger was befalling His unalloyed devotees, who were fully surrendered souls, at once took up His Sudarśana disc to protect them." - Srimad Bhagavatam 1.8.13