Accessibility Color preferences

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i'm trying change pdf display , print black text on light/white background:
]http://dnr.louisiana.gov/sec/execdiv/techasmt/presentations/ietc_chemical_marketing_assoc _inc_20040501.pdf

the file powerpoint.

the "black text on white" option works fine on many powerpoints have light text , dark background, not on one. here, changes text not change background.

i've tried other replace document colors options, nothing there helps.

thoughts? other adobe/third-party tools can this?

thanks , all,
humanengr



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