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{Transparent text,\starttextcolor[red] still active here!\stoptextcolor\blackrule[color=blue,width=5cm,height=\strutheight]}
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{\starttextcolor[ghost]Transparent text,\stoptextcolor\starttextcolor[red] still active here!\stoptextcolor\blackrule[color=blue,width=5cm,height=\strutheight]}
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