Robin Atwood posted on Sun, 16 Dec 2012 19:50:30 +0800 as excerpted:
> Since forever I have used a simple user style-sheet to force
> black-on-white default on web pages. This is necessary because I have a
> light-on-dark colour scheme and text can be unreadable if the background
> is defaulted. The CSS is not fancy, e.g.
>
> body {
> background-color: white; color: black;
> }
>
> INPUT {
> background-color: #E1E7FD;
> color: black;
> }
>
> Since about KDE 4.9 it is now completely ignored. Anyone else notice
> this?
FWIW, I too prefer light on dark. But I wanted /some/ color, just
enforcing light on dark, not the other way, and (as you mention) dealing
with sites that set one of foreground/text or background, but not both.
So I ended up with a different solution, which may or may not be suitable
for you.
What I do is use a web proxy, privoxy, running on localhost (the same
computer). The browser then uses privoxy, thus making the solution
browser agnostic, a fact that helped greatly when I decided to switch to
firefox from konqueror. (I could go into the reasons, but suffice it to
say I'm not happy with the security treatment konqueror gets, compared to
a "real" browser.)
Here's the privoxy home page: http://www.privoxy.org
The biggest down side is that privoxy won't filter secure connections
(there's a way to do it, but it's complicated and has other risks, so I
haven't), so they normally stay at defaults. However, it seems that most
sites, banks, online purchasing, etc, that bother with secure connections
are written well enough that while I might get irritating black on white,
they *DO* set BOTH foreground and background if they set one of them, so
at least they're generally readable.
The big upside is that privoxy, formerly known as junkbuster, works great
for filtering ads and other irritants as well, and that if the filters
break for some reason, they're under my control so I can either bypass
the proxy or rewrite the filters as necessary. Of course modifying the
filters does require a bit of patience and skill with regular
expressions, but if you're not upto that, just use the bypass where
necessary.
My color-rewriting filterset is based on the idea of keeping the page's
colors as much as possible, but rewriting the HTML/CSS color-codes (and
filtering background images) where necessary, to make light backgrounds
darker, while making dark text lighter. Thus for example, dark brick-red
text on a white background becomes brighter red text, on a black
background. I've incrementally developed the filterset over some years
now, since 2003ish I'd guess, so that it handles a lot more pages without
breaking and requiring a bypass than it used to, but there's still an
occasional exception that I have to set bypass for and reload[1].
Ideally you'd use my filterset as a base, continuing to customize it as
necessary just as I have, but as I said above, if you're not up on your
regex, etc, just hit bypass and reload when needed.
If this sounds like something you'd be interested in, let me know.
Unfortunately I don't have the website I used to keep the filterset on
any longer, but I hadn't kept it updated anyway. I can post the filters,
which are after all text-based, here, tho.
---
[1] Another option is a browser extension such as the firefox "read
easily" extension, that toggles styles at the touch of a button. I found
that about a year ago after my switch to firefox, and use that
occasionally when my filterset breaks things. That was another problem
with konqueror: it simply doesn't have enough market share to properly
sustain a reasonably useful and active browser extension community, like
firefox and chrome/chromium do. In theory, with webkit being based on
kde's khtml anyway, it would be possible to build a kde browser that
would support most of chrome/chromium's extensions, thus allowing kde
users to participate in and make use of that community, but perhaps
there's simply not the kde developer resources and interest available,
especially given that a non-kde browser such as chrome/chromium or firefox
can already be set as the kde default, altho kde integration isn't as
deep/nice as it is with konqueror.
The same thing can normally be done manually using the page style
switcher option that most browsers including konqueror and firefox
offer. But that's little enough used by the majority that the option's
generally buried deep in a menu somewhere, requiring an extension to make
it one-touch usable as a toolbar and/or hotkey option, and konqueror only
seems to enable the option if the page author provided style
alternatives. (Firefox seems to always have at least the basic style as
presented by the page author, and no style, as options, effectively
letting you toggle between no stylesheet and the normal page stylesheet,
with more options when the page author makes them available.)
--
Duncan - List replies preferred. No HTML msgs.
"Every nonfree program has a lord, a master --
and if you use the program, he is your master." Richard Stallman
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