bug#27086: perhaps always use a white background when viewing transparent PNGs etc.

[npostavs]

積丹尼 Dan Jacobson <jidanni@jidanni.org> writes:

> With this color,
> (add-to-list 'default-frame-alist '(background-color . "DarkSlateGray"))
> looking at
> http://jidanni.org/location/directions/qingfujie_slope.png
> is tough for the words outside the graph.

I don't see any problem.  It looks like that png has a non-transparent
white background?

bug-27086-default-frame.png
Description: screenshot with default background colour

bug-27086-gray-frame.png
Description: screenshot with gray background colour

> So perhaps always use a white background when viewing transparent PNGs, etc.

Seems to me if a PNG needs a certain background colour to be readable,
then it shouldn't be transparent.  What if you had a transparent PNG
with white words?