Tip: Calibre background "themes".

[SectorVector]

Like many I find the default white background hurts the eyes.
I use the following. Post yours if you have one.

Instructions:
1) Save attached image in a suitable folder.
I use the following folder in the calibre installation
Calibre2/resources/images/wallpaper_bg.jpg

2) Goto Preferences -> User Stylesheet
copy-paste the following.

Code:

body {
background-image:url("file:///D:/Programs/Calibre2/resources/images/wallpaper_bg.jpg") !important;
}

p {
margin:1.5em !important;
font-family:"Verdana" !important;
}

3) Ensure the "file:" line above points to the location where you have saved the attached file.

4) Change font size (in calibre click Preferences -> General) to your liking. I have set 'Default font size' to 20 px.

I think that's it. Hope it works.

Samples:
https://i.imgur.com/E91hIJ5.jpg (full screen)
https://i.imgur.com/16Fsh0z.jpg (book size)

Source: mobileread.com

[anmisto]

Well here's my CSS which I use:

Code:

body
{
text-indent:     1em;
text-align:    justify;
margin-left:    1em;
margin-right:    1em;
line-height:    1.20;
}
a{
color: #FFD699 !important;
}
h1,h2,h3,h4,h5,h6
{
text-indent:0em;
}

Other than that, I have selected in the General Tab of the Settings(Instead of specifying it in the CSS),

Font Options:
Serif Family: Charis SIL
Sans Serif Family: Cantarell

Colors and Backgrounds

Background Color: R:40 G:40 B:40 Alpha:255 (A Dark Greyish color)
Text Color: Set to White

Here's how it looks: