setting color for row header , column header , grids

hi
how to change the color of the row header , colun header and the columns

Thanks in anticipation
Arun

.active-scroll-top .active-box-item {background: #ccff99}
.active-scroll-left .active-box-item {background: #ffcc99}
.active-scroll-corner .active-box-item {background: #ff99cc}

.active-column-0 {background: #99ccff}
.active-column-1 {background: #99ffff}

HI ,
Thanks for the timely reply . when i apply colors to the column header , row header and the grids i noticed the following

1. the colors appeared to the row header have the default gray outline how to avoid this
2. when a color is applied to the column header , it blinds out the border lines between the column headers
3. when applying colors to the grid , the broder lines between the columns are breaking like "|" and do not appear as a continous border lines

why does it happen . how to avoid this

Thanks
Arun

I use...
.active-box-normal, .active-box-item {
                border-left: 1px solid threedlightshadow;
                border-bottom: 1px solid threedlightshadow;
            
}