How to make Colour combination game in c#?

Question

 [The computer plays a color-combination and you repeat it, that is all! ]

It is a game for brain exercise, in which there is some colours that arranged in a square. The game gives you a combination of colours by highlighting them one by one and you have to memorize that combination. After you have given the combination by the game you have to highlight that combination by simple mouse click in the given time period. If the combination or pattern is matched then your score will be increased.
 

You can also play this game at:
http://www.gamesforthebrain.com/game/memocoly/




 Please help me....!!