Still trying to figure out if there is a way to auto update styles. Not exactly sure that's possible yet as the defaults might not go with the custom styles at all, but working on it.

Here's what comes with the default style:

.newtotal

font-size: 8pt;
color: red;

------

.popup_content

border: 2px solid #BBBBBB;
background: #EEEEDD;

-------

.post_buttons

border: 1px solid #AAAAAA;
font-size: 9pt;
font-weight: bold;
color: #357082;
background: #DDDDBB;
padding-left: 2px;
padding-right: 2px;


As for your image problem. First, make sure you've uploaded the contents of the images/generic/default and default_dark folders. We've updated the images in those folders for the post buttons. If you're still getting the old images, then do a shift-reload on your browser and that should force the new images to reload.