Step 1 Log in to your blogger account and Click on Template ->
Step 2 Now click on Edit HTML-> Unfold code ►
Step 3 Now find ]]></b:skin> by Pressing Ctrl + F
/* menu tabes color change
----------------------------------------------- */
.tabs-cap-top, .tabs-cap-bottom, .tabs-outer, .PageList, .PageList ul, .PageList .widget-content {border:none!important; background:none !important; -moz-box-shadow:none!important; -webkit-box-shadow:none !important; box-shadow:none !important;}
.tabs-inner .section {border:none !important;}
.tabs-inner .PageList li a {background:#1818a5;}
.tabs-inner .PageList li:hover { COLOR: #FFB733; TEXT-DECORATION: none; font-weight: none }
.Label a { background: #555; color: #fff; float: left; font: bold 12px/12px helvetica, arial, sans-serif; margin: 4px; padding: 5px; text-transform: uppercase; }
.Label a:hover { background: #777; color: #fff; text-decoration: none; }