Hi Satish,
Could you please let me know how are you assigning your internal table to the field symbol <table>.
1. if the internal table is dynamic, that is, its structure is not known till run time, then we could add an extra field "i_color" to the field symbol <table>
2. if the internal table is not getting fetched dynamically, please change the strure of the internal table by adding an extra field "i_color".
and Satish it was not "cell_Color"..its "i_color"