Copy and paste below text into above text box and hit apply to try custom txt-url, color, and bg-url:
<iframe src = "https://chrisbaldys.com/widgets/dice.html?dice=2&color=red&txt-url=https://web.archive.org/web/20091026221833/http://geocities.com/supremefan/background/email.gif&bg-url=https://web.archive.org/web/20000829022733/http://www.geocities.com:80/Pentagon/Quarters/7992/spacebgani.gif" scrolling=no frameborder = "0" style="margin:0%; overflow:hidden; " >