Need to change the color of table view selection

I do not think you can use a custom color. However, you can use the following property of UITableViewCell

@property(nonatomic) UITableViewCellSelectionStyle selectionStyle

The selection style is a backgroundView constant that determines the color of a cell when it is selected. The default value is UITableViewCellSelectionStyleBlue. Since

typedef enum {
   UITableViewCellSelectionStyleNone,
   UITableViewCellSelectionStyleBlue,
   UITableViewCellSelectionStyleGray
} UITableViewCellSelectionStyle;

you can switch from the default blue to gray, or no colored selection at all.