Thanks Sir @Paul_Hossler
The above both codes are working fine to make the Hexagon shape(red color) to any custom color before the start of Emphasis:Fill color(given Blue color) animation.
So when the Emphasis:Fill color animation starts it changes to its original Blue color & remain blue for the end. Actually I wanted to change that fill color (blue) to any custom color.
Thanks again sir to make an interest to solve my problem