Neptune Firefox

Instructions:

• This theme is compatible with the latest release of Firefox and works on both Windows and macOS.
• To enable adaptive colors, you need to install the Adaptive Tab Bar Color extension. If not, the tabs will appear transparent.

Installation

• Download the theme file and unzip the chrome folder into your profile folder.
• You can modify the wallpaper in the userContent.css, and edit the file names for the light and dark modes

body {
	background: url("neptune/image/RainbowLight.png") center/cover no-repeat fixed;

	@media (prefers-color-scheme: dark) {
		background: url("neptune/image/RainbowDark.png") center/cover no-repeat fixed;
	}
}

Configuration

• about:config

  • Set toolkit.legacyUserProfileCustomizations.stylesheets to true.
  • Set svg.context-properties.content.enabled to true.
  • Set widget.non-native-theme.use-theme-accent to true.

• Required settings

  • Move all toolbar buttons to the top, and the tab bar does not display any buttons.
  • If extension (Adaptive Tab Bar Color) is enabled, set all colors in the Options (theme builder) to 0%.

ENJOY!