teaks for a dark(er) thunderbird theme

userChrome.css

@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");

#titlebar {
 height: 44px;
}

#navigation-toolbox, #tabmail-tabs, #tabmail-arrowscrollbox { /* Outer tab containers */
    min-height: 44px !important;
 }

.tabmail-tab { /* Give the tabs a bit of a margin */
    margin: 4px !important;
}

.tab-background { /* Round tab corners and add a bit of padding */
    padding: 6px !important;
    border-radius: 4px !important;
}

.tab-line { /* Eliminate the line at the top of the tab */
    height: 0px !important;
    display: none !important;
}

.tabmail-tab::after, .tabmail-tab::before { /* Eliminate the line between inactive tabs */
    border: none !important;
}

.toolbarbutton-1, .searchBox, .themeableSearchBox { /* Eliminate borders, round corners, and increase height on buttons and search bars */
    border: none !important;
    border-radius: 5px !important;
    padding-top: 3px !important;
    padding-bottom: 3px !important;
}

.panel-arrowbox { /* hide the arrow on popup menus */
    display: none;
}

.panel-arrowcontent { /* Eliminate borders, round corners, and increase padding on popup menus */
    padding: 5px !important;
    border-radius: 5px;
    border: none;
}

#threadTree treechildren::-moz-tree-cell-text(unread) {
	-moz-appearance: none !important;
	color: #8ab4f8 !important;
	font-weight: normal !important;
}

#threadTree treechildren::-moz-tree-row {
        padding-top: 1px !important;
        height: 24px !important;
	font-weight: 300 !important;
}
#folderTree treechildren::-moz-tree-row {
        padding-top: 1px !important;
        padding-bottom: 1px !important;
}
#folderTree treechildren::-moz-tree-image(isServer-true),
#folderTree treechildren::-moz-tree-image(newMessages-true) {
	fill: #8ab4f8 !important;
}
#folderTree treechildren::-moz-tree-cell-text(isServer-true) {
	color: inherit !important;
}
#folderTree treechildren::-moz-tree-cell-text(newMessages-true) {
	color: #8ab4f8 !important;
}