Since the iOS SDK has changed since I accepted the answer, I thought I was just updating a new answer.
In fact, you can change the color of the checkmark in the UITableViewCell by editing the tintColor property of the UITableViewCell.
You can also set the appearance proxy for all UITableViewCells so that ALL instances have a specific hue color, unless otherwise specified
[[UITableViewCell appearance] setTintColor:[UIColor redColor]];
nvrtd frst Sep 23 '13 at 9:38 on 2013-09-23 09:38
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