how to give forecolor and background for ROW in DGV

Question

 Output as follows;


 Date  Session  RK  Mk     CK  Gk  VK  CMK  CNN  UNNi  VB  GS  CM  JN  CA
 1/7/12  1      REO Tasco  AFF
 1/7/12  2      REO Tasco  AFF
 1/7/12  3      REO Tasco  AFF
 1/7/12  4      REO Tasco  AFF

 1/8/12  1      REO Tasco  AFF
 1/8/12  2      REO Tasco  AFF
 1/8/12  3      REO Tasco  AFF
 1/8/12  4      REO Tasco  AFF

from the output

fore color has light blue and back ground color as Sky Blue in 1/7/12 date
fore color has light brownand back ground color as purple   in 1/8/12 date


for 1/7/12 1to 4 session give fore color and background color different.
for 1/8/12 1to 4 session give fore color and background color different.