主题：单独设置标题行的每列的背景颜色

可以，参考

Dim tb As Table = Tables("表A")
Dim cs1 As C1.Win.C1FlexGrid.CellStyle = tb.Grid.Styles.Add("样式1")
Dim rng As C1.Win.C1FlexGrid.CellRange = tb.Grid.GetCellRange(0,1, 0,3) '第一行第一列到第三列
cs1.font = new font("宋体", 15)
cs1.backcolor = color.yellow
cs1.forecolor = color.red
rng.style = cs1