Forums Scripts & Popups removing certain parts of a string

so for example if we take this

l[style co:#040404;b;]i[style co:#080808;b;]k[style co:#0C0C0C;b;]e [style co:#141414;b;]t[style co:#181818;b;]h[style co:#1C1C1C;b;]i[style co:#202020;b;]s [style co:#282828;b;]o[style co:#2C2C2C;b;]n[style co:#303030;b;]e [style co:#383838;b;]l[style co:#3C3C3C;b;]a[style co:#404040;b;]l[style co:#444444;b;]a[style co:#484848;b;]l[style co:#4C4C4C;b;]a[style co:#505050;b;]l[style co:#545454;b;]a[style co:#585858;b;]l

i want to remove the style tags and strip it down so it actually returns 'like this one lala..,,'