No, you need to see what the bulb is rated for. There should be a kelvin rating associated with it, either on the packaging or the bulb itself. 5000k and above will work, but 6500k is better.
blue spectrum comes from the bulb not from a plastic covering or tinted bulb. yes 2700k is the majority blue spectrum bulb no cellophane needed
edit: my bad other way around 2700k is red and 6500k are blue