Made my first batch of green coffee on the weekend. Unroasted coffee beans, blade grinder, drip machine. It brewed to a green tea colour and I really liked it. I left the remainders overnight and the colour continued to change to a bright green and now almost blue colour. Any ideas what is going on?

Made my first batch of green coffee on the weekend. Unroasted coffee beans, blade grinder, drip machine. It brewed to a green tea colour and I really liked it. I left the remainders overnight and the colour continued to change to a bright green and now almost blue colour. Any ideas what is going on?

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