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change new tab button color

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I want to change the "+" color on the new tab icon

I was able to do this for the close tab "X' icon with the following css code in my userChrome.css file.

.tabbrowser-tab .close-icon:hover {

  fill: white !important;
  background-color: red !important;
  border-radius: 4px;
}

I think this code should work for the new tab icon, however I don't know the name of the new tab icon.

Please help,

Thank you

I want to change the "+" color on the new tab icon I was able to do this for the close tab "X' icon with the following css code in my userChrome.css file. .tabbrowser-tab .close-icon:hover { fill: white !important; background-color: red !important; border-radius: 4px; } I think this code should work for the new tab icon, however I don't know the name of the new tab icon. Please help, Thank you

Chosen solution

Its selector is:

.tabs-newtab-button{
  fill:red !important;
}

.tabs-newtab-button:hover{
  fill: white !important;
  background-color: rgba(255, 0, 0, 0.8) !important;
  border-radius: 4px;
}

I tested it in the Browser Toolbox and in userChrome.css and it works for me.

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Additional System Details

Installed Plug-ins

  • Shockwave Flash 32.0 r0

Application

  • User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:66.0) Gecko/20100101 Firefox/66.0

More Information

Wesley Branton
  • Top 10 Contributor
617 solutions 5143 answers

The new tab button CSS selector is:

.tabs-newtab-button {
     /* YOUR CSS RULES */
}

For future reference, if you open chrome://browser/content/browser.xul in Firefox, you can see the layout of the browser and use the developer tools to navigate through the hierarchy to find IDs and classes of elements that you want to modify.

Hope this helps.

The new tab button CSS selector is: <pre><nowiki>.tabs-newtab-button { /* YOUR CSS RULES */ }</nowiki></pre> For future reference, if you open <code>chrome://browser/content/browser.xul</code> in Firefox, you can see the layout of the browser and use the developer tools to navigate through the hierarchy to find IDs and classes of elements that you want to modify. Hope this helps.
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cor-el
  • Top 10 Contributor
  • Moderator
17534 solutions 158534 answers

Chosen Solution

Its selector is:

.tabs-newtab-button{
  fill:red !important;
}

.tabs-newtab-button:hover{
  fill: white !important;
  background-color: rgba(255, 0, 0, 0.8) !important;
  border-radius: 4px;
}

I tested it in the Browser Toolbox and in userChrome.css and it works for me.

Its selector is: <pre><nowiki>.tabs-newtab-button{ fill:red !important; } .tabs-newtab-button:hover{ fill: white !important; background-color: rgba(255, 0, 0, 0.8) !important; border-radius: 4px; } </nowiki></pre> I tested it in the Browser Toolbox and in userChrome.css and it works for me. *https://developer.mozilla.org/en-US/Tools/Browser_Toolbox

Modified by cor-el

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Question owner

Thank you!

Regards,

D.M. De Haven

Thank you! Regards, D.M. De Haven
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