Hi Does adding \setupcolors[state=start] at the top of the context file help? Hans, how about enabling colors by default in mkiv? Aditya On Thu, 14 Feb 2008, Alan BRASLAU wrote:

Hello,

I am having problems including 16-bit png files in ConTeXt. In the following example, red.png is a 800x600 image of red pixels. The resulting test.pdf shows a BLACK rectangle. (The same problem exists with real images.)

However, I can produce the desired result with my installation under pdflatex...

$ cat test.tex \starttext \externalfigure[red][width=\textwidth] \stoptext $ file red.png red.png: PNG image data, 800 x 600, 16-bit/color RGB, non-interlaced $ texexec test

$ cat test2.tex \documentclass{article} \usepackage{graphicx} \begin{document} \includegraphics[width=\textwidth]{red} \end{document} $ pdflatex test2

My distribution (debian + texlive) uses This is pdfTeXk, Version 3.141592-1.40.3 (Web2C 7.5.6) in both cases.

Does this have something to do with \pdfimagehicolor?

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Alan BRASLAU wrote:

$ cat test.tex

\starttext \pdfimagehicolor=1 \externalfigure[red][width=\textwidth] \stoptext There, fixed that. That setting could go into the context core, though.

Does this have something to do with \pdfimagehicolor?

I am always surprised how many people ask a question, guess the correct answer themselves, but don't actually attempt to see if it works :-) Best wishes, Taco