Symbology

                                        

To day we are going to give different colors for the polygons which are in same Shape file,

Step 1 ,

Add a shape file to ArcMap which containing at least few polygons. 

Step 2,

Then right click on the Shape file and select the properties,

Step 3,

Now you can see the property window, then select Symbology tab, and select Unique Value under Categories,

Step 4,

Then from the Value Filed you can select the filed you want to work with Symbology,

Step 5,

Then you have to select "Add All Values", then in the pop up window select "Yes" button, 

Step 6,

Now you can see ArcMap has been added the polygons you have requested,

Step 7,

You can select color scheme as you wish by using "Color Ramp",

Step 8,

Finally just select "Apply" and "Ok", you will see your work as below,