How To Add Multi Colored Popular Post Widget To Blogger

Go to Blogger Dashboard --> Template --> Edit HTML --> Proceed

Backup your Template before making any changes to your blog
Now Expand Widget Templates
Press Ctrl+F and search the code shown below
Now Find the code shown below using Ctrl+F

]]></b:skin>

Now Paste the Code Shown Below just above/before it

#PopularPosts1 ul{margin:0;padding:5px 0;list-style-type:none}

#PopularPosts1 ul li{position:relative;margin:5px 0;border:0;padding:10px}

#PopularPosts1 ul li:first-child{background:#ff4c54;width:90%}

#PopularPosts1 ul li:first-child:after{content:"1"}

#PopularPosts1 ul li:first-child + li{background:#ff764c;width:87%}

#PopularPosts1 ul li:first-child + li:after{content:"2"}

#PopularPosts1 ul li:first-child + li + li{background:#ffde4c;width:84%}

#PopularPosts1 ul li:first-child + li + li:after{content:"3"}

#PopularPosts1 ul li:first-child + li + li + li{background:#c7f25f;width:81%}

#PopularPosts1 ul li:first-child + li + li + li:after{content:"4"}

#PopularPosts1 ul li:first-child + li + li + li + li{background:#33c9f7;width:78%}

#PopularPosts1 ul li:first-child + li + li + li + li:after{content:"5"}

#PopularPosts1 ul li:first-child + li + li + li + li +li{background:#7ee3c7;width:75%}

#PopularPosts1 ul li:first-child + li + li + li + li + li:after{content:"6"}

#PopularPosts1 ul li:first-child + li + li + li + li + li +li{background:#f6993d;width:72%}

#PopularPosts1 ul li:first-child + li + li + li + li + li + li:after{content:"7"}

#PopularPosts1 ul li:first-child + li + li + li + li + li + li +li{background:#f59095;width:69%}

#PopularPosts1 ul li:first-child + li + li + li + li + li + li + li:after{content:"8"}

#PopularPosts1 ul li:first-child + li + li + li + li + li + li + li +li{background:#c7f25f;width:66%}

#PopularPosts1 ul li:first-child + li + li + li + li + li + li + li + li:after{content:"9"}

#PopularPosts1 ul li:first-child:after,

#PopularPosts1 ul li:first-child + li:after,

#PopularPosts1 ul li:first-child + li + li:after,

#PopularPosts1 ul li:first-child + li + li + li:after,

#PopularPosts1 ul li:first-child + li + li + li + li:after,

#PopularPosts1 ul li:first-child + li + li + li + li + li:after,

#PopularPosts1 ul li:first-child + li + li + li + li + li + li:after,

#PopularPosts1 ul li:first-child + li + li + li + li + li + li + li:after,

#PopularPosts1 ul li:first-child + li + li + li + li + li + li + li + li:after{position:absolute;top:20px;right:-15px;border-radius:50%;background:#353535;width:30px;height:30px;line-height:1em;text-align:center;font-size:28px;color:#fff}

#PopularPosts1 ul li .item-thumbnail{float:left;border:0;margin-right:10px;background:transparent;padding:0;width:70px;height:70px;}

#PopularPosts1 ul li a{font-size:12px;color:#444;text-decoration:none}

#PopularPosts1 ul li a:hover{color:#222;text-decoration:none}

#PopularPosts3 img{

-moz-border-radius: 130px;

-webkit-border-radius: 130px;

border-radius: 130px;

-webkit-transition: all 0.3s ease;

-moz-transition: all 0.3s ease;

transition: all 0.3s ease;

padding:4px;

border:1px solid #fff !important;

background: #F2F2F2;}#PopularPosts1 img:hover {

-moz-transform: scale(1.2) rotate(-560deg) ;

-webkit-transform: scale(1.2) rotate(-560deg) ;

-o-transform: scale(1.2) rotate(-560deg) ;

-ms-transform: scale(1.2) rotate(-560deg) ;

transform: scale(1.2) rotate(-560deg) ;

}