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Ubuntu Dark Themes Fixs For Mozilla Firefox

Here is a userstyle for Stylish that implements the CSS fix.

Install both of it.

Open Firefox --> Tools ---> Adds-on  ---> User Styles ----> High Contrast Inverse Google Fix  ----> Edit

Replace  content
@-moz-document domain(google.com)
{ input { -moz-appearance: none !important; color: #000000 !important; } }

with this

input[type="text"],
input[type="password"],
textarea
{
 -moz-appearance: none !important;
 background: white;
 color: black;

 border-radius: 5px;
 border: 1px solid #BBB;
 background-color: white;
 padding: 3px;
 color: black;
}

Save.

Enjoy the new look.

source 

download file now