Couldn\'t find default placeholder style for input element.
There are no any webkit-input-placeholder, -moz-placeholder, -moz-placeholder
Webkit's User Agent Stylesheet (Chrome & Safari) can be found here: http://trac.webkit.org/browser/trunk/Source/WebCore/css/html.css
Their CSS shows:
::placeholder {
-webkit-text-security: none;
color: darkGray;
pointer-events: none !important;
}
input::placeholder, isindex::placeholder {
white-space: pre;
word-wrap: normal;
overflow: hidden;
}
I can't find any other sources that have the defaults for other browsers, but I imagine they would be close to this.