So, I've searched and found entries stating that there should be a remove button next to the theme thumbnail. However, this doesn't seem to be the case. I've installed the new 3.2 and everything seems to be functional and working. Do these buttons not exist for the default themes? I've tried to simply remove the theme folder for "greensalad" however this just results in missing images and not a theme removal. My interest in this is to limit options for end users. Anyone have any feedback for me?

Thanks.