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Six legs, two antennas, Neon green colour pattern with black. Had no wings.
This appears to be a Lychee Shield Bug, Commonly found in India, formerly considered a beetle, but now classified as a True Bug.
This is a Lychee Shield Bug, Chrysocoris stolli, also known as jewel bugs or metal shield bugs. See this picture from the Wikipedia:
Some more information can be found here and here.
Required, but never shown