[OS X TeX] dvipng color trouble

"mitcho (Michael 芳貴 Erlewine)" mitcho at mitcho.com
Wed May 23 01:07:25 EDT 2007

Hi all,

I've recently run into what I believe is a rare bug in dvipng: here's  
the setup. (To play along, you can get my test files: http://mitcho.com/discolor.zip 
  .) I am using MacTeX... in fact, it's today's release.

The LaTeX source file (discolored.tex) loads just two packages: color  
and graphicx. The body does two things: an \includegraphics with a  
local PNG file (with the bb option to specify the BoundingBox  
explicitly) and a \textcolor command introducing some green text,  
using the green defined there.

pdflatex produces the expected result: the figure and the green text.  
But when you run the following commands...

latex discolored.tex
dvipng -D 200 discolored.tex

you get a PNG (discolored1.png) which shows the text in a brownish  
color... the green is gone!!

There are two quick ways to fix this that I've found: one is to not  
include the image... if you comment the \includegraphics command out,  
the color comes out fine. The second is to not specify a -D (output  
resolution) parameter in the dvipng... this also gives you the  
expected output. However, in my current project, neither of these are  
available options...

I am frankly not very familiar with the inner workings of dvipng...  
does anyone have any thoughts? Can this bug be reproduced?

Any hints or suggestions are welcome!


mitcho (Michael 芳貴 Erlewine)
The Academic Approach, theacademicapproach.com
University of Chicago, Departments of Linguistics and Mathematics
mitcho at mitcho.com
------------------------- Helpful Info -------------------------
Mac-TeX Website: http://www.esm.psu.edu/mac-tex/
TeX FAQ: http://www.tex.ac.uk/faq
List Archive: http://tug.org/pipermail/macostex-archives/
List Reminders & Etiquette: http://www.esm.psu.edu/mac-tex/list/

More information about the MacOSX-TeX mailing list