If your template "?-menu.css" files include the note /* menu ver 3.15b 2010 */ in your template "css" folder then you do not need this update, or if there is a letter "b"and "2010" in the menu ver name you will not need this update.
Fix Option #1:
Hand edit your "?-menu.css" file (or files) in your template folder (menu files may also be in "css" folder). Edit the following code starting on about line #62 in your "?-menu.css" file. The following example is code in a "blue-menu.css" in an ExecChrome template:
/* TOP LEVEL BACKROUND COLOR AND BORDERS - EDIT MENU IMAGES ALSO */
#menunav li {
background-image: url("../picts/blue/menu.gif");
background-color: #0F338A; border: solid #313252;
border-width: 0px 1px 0px 0px; /* THIS IS A RIGHT BORDER */
/* NOTE: BORDERS ABOVE ARE | top | right | bottom | left */
float: left;
padding: 0;
}
Edit the above code like the code shown below, changes are highlighted. Remove the code highlighted above. Add the code as highlighted below.
/* TOP LEVEL BACKROUND COLOR AND BORDERS - EDIT MENU IMAGES ALSO */
Fix Option #2: Multi-color Chrome templates only: You can download the 23 themes for multi-color CSS drop menu templates. With this download .zip file you can copy over updated versions of the CSS files for your template "css" folder. See the help page included in this download.