PIL Gotcha maybe?

[Erik Max Francis]

Robin Becker wrote:

> I'm trying to use PIL as a pixmap output of an image stored as a
> string
> and get strange artefacts.
	...
> so that the buffer has certainly got into PIL ok. However, the GIF
> made from the
> image isn't quite right, the green square isn't a uniform colour.
> 
> see  http://www.reportlab.com/images/test_renderPM_002.gif

It looks dithered.  I presume that by default the GIF PIL plugin uses
the Web palette; your color isn't exactly represented in that palette,
so it's dithering it in the output.

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