I am an object. I can come in many different colours. Who am I?

I am an object. I can come in many different colours. If you waste me, you are harming the environment. I am super flexible but after you bend me there are bend marks. I am cut in many different shapes changing my shape. People sometimes bend me in many various shapes and put me on display. Ink and lead are being coloured in my body every day. I am important and sometimes I am not so important. I am not a cloth. When technology advances, I will not be used so much and in time I will be old.

Who am I?

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