Rewrote sidebar compilation code, caching is more stable now and things were cleaned up/separated into more functions/made plugin-expandable. In theory, plugins can add new sidebar block types now. I'd personally like to see a fully plugin-based sidebar editor that completely overhauls what Enano has now sometime now that this framework is in place.
/* Silver */
.o2k7SkinSilver .mceToolbar .mceToolbarStart span, .o2k7SkinSilver .mceButton, .o2k7SkinSilver .mceSplitButton, .o2k7SkinSilver .mceSeparator, .o2k7SkinSilver .mceSplitButton span.mceOpen, .o2k7SkinSilver .mceListBox .mceOpen {background-image:url(img/button_bg_silver.png)}
.o2k7SkinSilver table, .o2k7SkinSilver .mceMenuItemTitle a {background:#eee}
.o2k7SkinSilver .mceListBox .mceText {background:#FFF}
.o2k7SkinSilver .mceExternalToolbar, .o2k7SkinSilver .mceListBox .mceText, .o2k7SkinSilver div.mceMenu, .o2k7SkinSilver table.mceLayout, .o2k7SkinSilver .mceMenuItemTitle a, .o2k7SkinSilver table.mceLayout tr.mceFirst td, .o2k7SkinSilver table.mceLayout, .o2k7SkinSilver .mceMenuItemTitle a, .o2k7SkinSilver table.mceLayout tr.mceLast td, .o2k7SkinSilver .mceIframeContainer {border-color: #bbb}