On Fri, 2018-10-26 at 14:02 -0400, Bob Goodwin wrote:
> I dnf installed SeaMonkey in an attempt to reduce problems I have
> with configuring newer versions of Thunderbird which no longer accept
> some of the add-ons essential to me. It seems to work as expected
> except for the message "headers" listed above the message text.
>
> I use white text on a black background and the "Subject, To, From,
> etc"addresses are listed in dark blue which, for me at least, fades
> into the background. I would like to change that to white, as it is
> in Thunderbird. Almost as bad it turns red when the cursor is placed
> on the line, why anyone wanted that feature is beyond my
> comprehension!
If you want to point me in the direction of the instructions that
you're looking at, I can see if I can make sense of them.
Thunderbird, and it's relatives, use HTML-like parsing for their
message display, so it's likely SeaMonkey's followed the same plan:
Using CSS (content style sheets) with the same weblink options.
Whether that be a plain text file with all the data in it (Mozilla
products have used a "userChrome.css" file somewhere in your profile
for this kind of thing), or a set of about:config options for each of
them. There's a possibility that you could find a *theme* that sets
all of these things to your needs.
Links are displayed differently than the rest of the page,
traditionally white or grey page background, black plain text, blue
underlined links. With links changing colour when hovered over, as
they're being clicked on, and when they've already been visited. So
that's four link colouring modes to customise.
In CSS (other techniques may use the same keywords):
a:link sets the normal colour of an unvisited link
a:visited sets the colour of a visited link
a:hover sets the colour a link the pointer/cursor is hovering over
a:active sets the colour of a link while it's being clicked on
And you can set the foreground and background colours, as well as text
styling (such as underlining), for each of those parameters. In your
case, you'd probably want to set the unvisited and visited to two
distinct bright colours (e.g. yellow and orange).
If that's (above) the kind of instructions you've been looking at, the
CSS coding for doing that kind of thing is:
a:link
{
color: white;
background-color: inherit;
}
a:visited
{
color: yellow;
background-color: inherit;
}
a:hover
{
color: greenyellow;
background-color: inherit;
}
a:active
{
color: magenta;
background-color: inherit;
}
There's a bunch of well known colour names that browsers recognise, and
I've just picked four at random. Outside of those names, you'd use
numerical colour codes to set up something else.
The "inherit" parameter just means to inherit the background colour of
the page behind the link.
--
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