在运行时使用vb.net更改Cystal Reports中“详细信息”部分内“公式”字段的颜色

Question

我使用此代码更改文本对象的颜色

Dim dname1 As CrystalDecisions.CrystalReports.Engine.TextObject = CrystalReport21.Section2.ReportObjects("dname1")
dname1.Color = My.Settings.crdcolor  


'// is use this method 
'//but it not have color properties 
Dim  tField As CrystalDecisions.CrystalReports.Engine.FormulaFieldDefinition = CrystalReport21.DataDefinition.FormulaFields.Item("tField")         

现在我需要更改详细信息部分中字段的颜色