Changing the captcha plugin background

[eluser]TheFuzzy0ne[/eluser]
No. It's a very simple plugin. If you want more flexibility, check out [url="http://ellislab.com/forums/viewthread/105788/"]my captcha library[/url]. It's based on [url="http://www.phpcaptcha.org/"]SecurImage[/url], and allows a much higher level of customisation.