How to customize background color for some web pages opened with eww?

[Originally posted by]: http://emacs.stackexchange.com/questions/2955/how-to-customize-background-color-for-some-web-pages-opened-with-eww

I just installed emacs 24.4 and I’ve started using eww. But one annoying thing is that when I visit google.com I get a grey background which makes text really hard to read for my theme.

This is how it looks: enter image description here

Is there any way I could change the color of the background? I first thought I could customize eww faces but there is no option for this. I’m also curious why is this background color there, in the first place.

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I’m not sure why the background color is there either, but it seems to be controlled by the function shr-color-check, which is supposed to check that the contrast between the fg and bg is sufficient for the text to be visible. I agree that the readability is not very good in your example. Luckily, there are some variables that can be tweaked: shr-color-visible-luminance-min and shr-color-visible-distance-min. I tried setting

(setq shr-color-visible-luminance-min 70)

and the results are much more readable:

Screenshot of eww window with better contrast

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Yep, using shr-color-visible-luminance-min makes the content of the page readable. Thanks. – caisah Nov 14 ’14 at 10:20
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