Вам не нужен цикл для этого.Вы можете просто добавить новое FormatCondition к вашему объекту диапазона.
lLow = 90000
lHigh = 100000
Set rng = Range("K8:K207")
rng.FormatConditions.Delete ' delete any pre-existing formatting
' add greater than condition
With rng.FormatConditions.Add(Type:=xlCellValue, Operator:=xlGreater, Formula1:="=" & lHigh)
.Interior.Color = rgbLimeGreen
End With
' add middle condition
With rng.FormatConditions.Add(Type:=xlCellValue, Operator:=xlBetween, Formula1:="=" & lLow, Formula2:="=" & lHigh)
.Interior.Color = rgbGold
End With
' add less than condition
With rng.FormatConditions.Add(Type:=xlCellValue, Operator:=xlLess, Formula1:="=" & lLow)
.Interior.Color = rgbRed
End With