How change label button in blogspot/blog

hey friend label is good way to search your contain in blog blogger launch this with option here we see how we can change label cloud How to Customize?

Here is a sample Style which will give a bluish look for the cloud..Here i have applied styles for all 5 label classes and their hover styles (so 10 style definitions in total).
Add Below Code before ]]></b:skin>



.label-size-5 a {color: #2789ce; /*color of a label of class 5*/

font-size: 3em;
text-decoration: none;
   }
.label-size-5 a:hover {color: #2789ce; /*color of a label of class 5 on hover*/
text-decoration: underline;
   }
.label-size-4 a {color: #2789ce;/*color of a label of class 4*/
font-size: 2.5em;
text-decoration: none;
   }
.label-size-4 a:hover {color: #2789ce;/*color of a label of class 4 on hover*/
text-decoration: underline;
   }
.label-size-3 a {color: #2789ce;/*color of a label of class 3*/
font-size: 2em;
text-decoration: none;
   }
.label-size-3 a:hover {color: #2789ce; /*color of a label of class 3 on hover*/
text-decoration: underline;
   }
.label-size-2 a {color: #2789ce;/*color of a label of class 2*/
font-size: 1.5em;
text-decoration: none;
   }
.label-size-2 a:hover {color: #2789ce; /*color of a label of class 2 on hover*/
text-decoration: underline;
   }
.label-size-1 a {color: #2789ce;/*color of a label of class 1*/
font-size: 1em;
text-decoration: none;
   }
.label-size-1 a:hover {color: #2789ce; /*color of a label of class 1 on hover*/
text-decoration: underline;
   }

Here all of these CSS styles are customizable.You can change the colours and font sizes of each of the 5 classes.
color: #2789ce; is responsible for the colouring of each of the classes.You can change it appropriately with some other hex colour code or something like color:red;
You can adjust the font size of these 5 classes by adjusting the corresponding font-size: attribute of that label size class.. (em is a unit of font size just like px)