<div dir="ltr">Hi All<div><br></div><div>As Phil has already determined, the problem only occurs in XeTeX (not in pdfTeX or LuaTeX). </div><div>And I just checked it is visible in both TL'19 and TL'20.</div><div><br></div><div>Paulo Ney</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Jan 10, 2021 at 3:53 AM Ulrike Fischer <<a href="mailto:news3@nililand.de">news3@nililand.de</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Am Sat, 9 Jan 2021 12:08:34 -0800 schrieb Paulo Ney de Souza:<br>
<br>
> I have (a couple) of PNG images with a background color of, for example,<br>
> RGB(80,64,83), that when placed on a page of the same background color with<br>
> {graphicx} -- they show a distinct tonality against the background -- which<br>
> is of the same color.<br>
<br>
> PS. For experimentation here are the same images, before and after opening<br>
> with GIMP.<br>
<br>
I can't reproduce your problem with the files you provided. <br>
<br>
How do you compile? Which TeX-System do you have? And which viewer<br>
do you use to view the pdf? Can you provide the pdf you get?<br>
<br>
-- <br>
Ulrike Fischer <br>
<a href="http://www.troubleshooting-tex.de/" rel="noreferrer" target="_blank">http://www.troubleshooting-tex.de/</a><br>
<br>
</blockquote></div>