SP List Calculated field disp whole formula,instead of value

Question

Actyally list have two calculated fields 

1.Colour( formula is working fine)

2.Display (instead of value it is displaying whole below caculated formula)

 

="<span style='width:100%;display:inline-block;text-align:center;border:1px solid "&Colour&";color:"&Colour&";cursor:pointer;text-decoration:none;'> "&Title&"</span>"

 

insted of color with value, Display column displaying whole above formula.

 

How to fix this what is the issue in the span tag..?

 

Kindly help me