How to programmatically change background color in MS Project 2007 cell

please help me to find a solution! I am tring to automate some ms project features using c# and canot find a solution how to change background and font color of special task cell.

I enumerate all tasks in project in that code sample, and when if statemet is true i want to change current cell color.

    foreach(Task t in Project.Tasks)
{
    if(t.Nmae=="TaskName")
    {
      //I want to change back color of current cell here
    }
} 

qqq