Project 2010 does NOT have a feature to show Percent Allocation (in table and timephased data) below or above capacity in Task Usage view in different color. Though your requirement is on Task Usage, I would want to let you know in Resource Usage view percent allocation above capacity are displayed in Red color, which can be customized using Format tab> Text Styles > Overallocated Resources. Again, in Resource Usage there is no feature to display Percent Allocation (in table and timephased data) below capacity in different color.
In Task Usage, if you want to know the dates when the resources is assigned more or less than the capacity, you need to write a macro.
a) First, change your current view to Task Usage
b) Insert two columns on the table: Overallocated, Flag1, Notes. The Overallocated column will be true if the resource is overallocated in some day of that assignment. The Flag1 will be used by the below macro to indicate if the resource is assigned less than the capacity. The Notes field will be updated by the below macro with the dates when the resource is above and below capacity.
c) In View tab, Macros > Visual Basic. Copy the below code into the module group
Sub Show_Resource_Capacity_For_Each_Assignment()
Dim myProjectTask As Task
Dim myResourceAssignment As Assignment
For Each myProjectTask In ActiveProject.Tasks
For Each myResourceAssignment In myProjectTask.Assignments
CalculateResourceCapacity myResourceAssignment
Next myResourceAssignment
Next myProjectTask
End Sub
Sub CalculateResourceCapacity(myResourceAssignment As Assignment)
Dim tsv, tsvs
Dim st, fn
st = myResourceAssignment.Start
fn = myResourceAssignment.Finish
myResourceAssignment.Notes = “”
myResourceAssignment.Flag1 = False
Set tsvs = myResourceAssignment.TimeScaleData(StartDate:=st, EndDate:=fn, _
Type:=pjAssignmentTimescaledPercentAllocation, _
TimeScaleUnit:=pjTimescaleDays)
For Each tsv In tsvs
If (Val(tsv) < 100) Then
myResourceAssignment.Flag1 = True
myResourceAssignment.AppendNotes “Below capacity on ” & tsv.StartDate
End If
If (Val(tsv) > 100) Then
myResourceAssignment.AppendNotes “Above capacity on ” & tsv.StartDate
End If
Next tsv
End Sub
I know this is quite complex, but if your intent is to know the dates when the resource is working below and above capacity the above code should be good.