There are lots to choices to make when it comes to bedroom design (bedroom furniture, bedroom lighting, bedroom... gym equipment?) but, usually, the design starts with the all-important bedroom colour scheme. It's not a bad place to start since your bedroom colour scheme really sets the tone for the rest of the room.
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Your bedroom should be a glorious thing to wake up to in the morning and a haven to retire to at night so choose a bedroom colour which works well for you. This might be one place to ignore trends, unless a particular trend just so happens to resonate with you.