The Perfect Illusion !

Now a day , everyone knows what a illusion is . Illusion are a part of our life ,
Which makes us surprised . An perfect illusion can not be explained in words .
Today ,I will try to give you a simple demonstration of a perfect illusion using
an image .

After watching this image you are thinking that , its not a illusion .
Now hold your finger in the middle of the image .
Did you noticed something .
Both the colour becimes same after placing your finger in the middle of the image .
Thanks for reading . Hope you enjoyed it.