Background Color in MVC

Question

ICreated a Webgrid on MVC, I have around 22 Columns returned by the Webgrid, I am trying to generate Background color Red, Green, Yellow depending on the Condition.

1 --> Green

0 --> Red

-1 --> Yellow 

 

I have a Query but it is not working as  expected, I need to put each column number that way I need to create 22 conditions but i need something simple which says if its 1 then Green, 0 Red and -1 Yellow.

 

 Please help, as i couldnt find the answer anywhere, I am trying for this for a while.