What is the meaning of "[color=#ff0000]walking shadow" 
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[font=Times New Roman, Times, serif][size=2][color=#000000]Life’s but a [color=red]walking shadow[/color], a poor player[/color][/size][/font]
[font=Times New Roman, Times, serif][size=2][color=#000000]That struts and frets his hour upon the stage[/color][/size][/font]
[font=Times New Roman, Times, serif][size=2][color=#000000]And then is heard no more.[/color][/size][/font]
[indent][indent][size=2][font=Times New Roman, Times, serif][size=2][color=#000000]William Shakespeare [/color][/size][/font][/size]
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