Question: I switched to a dark theme (Dolorean Dark). I like it and I think--it is better for eyes. However I have problems in some web pages. Most pages are intended to be shown on white background. On dark theme form controls have black background and mostly the font is also black, so the content of forms are invisible. I would like to use white theme on web pages in Firefox.

Answer: 
changing userContent.css solves problem ; more information is [here](http://ubuntuforums.org/showthread.php?t=1715679) also dolerean theme comes with the firefox tweak more information is [here](http://gnome-look.org/content/show.php/DeLorean-Dark?content=153866); just installing it is enough
Use the Stylish add-on for Firefox and make a new global style:

```
html input,
html textarea,
html select,
html button,
html input[type="reset"],
html input[type="button"],
html input[type="submit"],
html input[type="radio"],
html input[type="checkbox"] {
    background-color: inherit;
    color: #333333;
    -moz-appearance: none;
} 

```

Below is a picture of the extension configuration, showing Gnome dark theme still applied to the window borders. Local sites still display the dark theme.

![Picture](https://i.stack.imgur.com/S1rKE.png)