http://www.icyphoenix.com/viewtopic.php?f=32&t=7753&p=52179#p52179
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Joshua203
Wed 30 Mar, 2011 18:29

[TIP] Easy ReCaptcha Restyling
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Hi all,

When you want to use ReCaptcha on your forum you may feel that it does not quite fit your style, there is an easy way and a hard way to adjust this... below I will describe the easy way:

For this example I will choose black pearl because this is the style my own forum theme is based upon...

Open styles/black_pearl/template/captcha_recaptcha.html and find:
[code linenumbers=false]	var RecaptchaOptions = {
		lang : '{LA_RECAPTCHA_LANG}',
		tabindex : <!-- IF $CAPTCHA_TAB_INDEX -->{$CAPTCHA_TAB_INDEX}<!-- ELSE -->10<!-- ENDIF -->
	};[/code]
replace it with:
[code linenumbers=false]	var RecaptchaOptions = {
		lang : '{LA_RECAPTCHA_LANG}',
		theme : 'blackglass',
		tabindex : <!-- IF $CAPTCHA_TAB_INDEX -->{$CAPTCHA_TAB_INDEX}<!-- ELSE -->10<!-- ENDIF -->
	};
[/code]

Open the styles/black_pearl/template/theme/stylesheet.css and at the bottom paste the following on a new blank line:
[code linenumbers=false]
/* === reCaptcha corrections === */

#recaptcha_table {
   background-color: #121212;
}
  
#recaptcha_response_field {
	color: #FDC400;
	background-color: #111111;
	font-family: Verdana, "Trebuchet MS", "Lucida Grande", Helvetica, Arial, sans-serif;
	font-size: 1.3em;
	line-height: 1.4em;
	font-weight: normal;
}

#recaptcha_response_field:hover {
	color: red;
	background-color: #232323;
}[/code]

To also make it look the same in your ACP-example open... adm/style/captcha_recaptcha.html in there replace the same as described in the first two code boxes above!!
And make the same stylesheet changes in... adm/style/admin.css

That's all  ...you can now purge the cache to complete this job  :wink: 

Styles you are allowed to use are:
blackglass, red, white and clean

Enjoy,
...Joshua203