Setting text color on links doesn't work in 3.5.3

Setting the text color on links in 3.4.3 works as expected, so this must be a new bug.

Here's the code I am using.

```
NSMutableAttributedString* addressStr = /*...*/;
NSRange someRange = /* range */;
[addressStr setLink:[NSURL URLWithString:@"location://store"] range:someRange];
[addressStr setTextColor:[UIColor clearColor] range:someRange];
addressStr.userInteractionEnabled = NO;
```