Set Grid Color ：to change the background color of a cell, row, column, or the entire control.
Set Grid Font ：to change the type, style, size, effects, and color of the font in a cell, row, column, or the entire control.
Set Grid Row Format ： to use HTML formatting commands to control the appearance of the grid, not only for color and font, but for other factors as well.
业务场景：需要将某些列的负数用红色显示，函数使用如下所示
参数：设置GRID，设置作用域（当前行、全部行），设置列，设置样式