Had to specify the property explicitly to bind UIColor. Now we use defaultValue property to get the tweak's type.

Author: sgl0v

FBTweak/_FBTweakCollectionViewController.m

@@ -129,7 +129,7 @@ - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath
   } else if ([tweak.possibleValues isKindOfClass:[NSArray class]]) {
     _FBTweakArrayViewController *vc = [[_FBTweakArrayViewController alloc] initWithTweak:tweak];
     [self.navigationController pushViewController:vc animated:YES];
-  } else if ([tweak.possibleValues isKindOfClass:[UIColor class]]) {
+  } else if ([tweak.defaultValue isKindOfClass:[UIColor class]]) {
     _FBTweakColorViewController *vc = [[_FBTweakColorViewController alloc] initWithTweak:tweak];
     [self.navigationController pushViewController:vc animated:YES];
   }

FBTweak/_FBTweakColorViewController.m

@@ -31,8 +31,7 @@ @implementation _FBTweakColorViewController {
 
 - (instancetype)initWithTweak:(FBTweak*)tweak
 {
-  NSParameterAssert(tweak != nil);
-  NSParameterAssert([tweak.possibleValues isKindOfClass:[UIColor class]]);
+  NSParameterAssert([tweak.defaultValue isKindOfClass:[UIColor class]]);
   self = [super init];
   if (self) {
     _tweak = tweak;

FBTweak/_FBTweakTableViewCell.m

@@ -127,7 +127,7 @@ - (void)setTweak:(FBTweak *)tweak
     mode = _FBTweakTableViewCellModeDictionary;
   } else if ([tweak.possibleValues isKindOfClass:[NSArray class]]) {
     mode = _FBTweakTableViewCellModeArray;
-  } else if ([tweak.possibleValues isKindOfClass:[UIColor class]]) {
+  } else if ([value isKindOfClass:[UIColor class]]) {
     mode = _FBTweakTableViewCellModeColor;
   } else if ([value isKindOfClass:[NSString class]]) {
     mode = _FBTweakTableViewCellModeString;

FBTweakExample/FBAppDelegate.m

@@ -59,11 +59,11 @@ - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(
   _label.textColor = [UIColor blackColor];
   _label.font = [UIFont systemFontOfSize:FBTweakValue(@"Content", @"Text", @"Size", 60.0)];
   FBTweakBind(_label, text, @"Content", @"Text", @"String", @"Tweaks");
-  FBTweakBind(_label, textColor, @"Content", @"Text", @"Color", [UIColor redColor], [UIColor redColor]);
+  FBTweakBind(_label, textColor, @"Content", @"Text", @"Color", [UIColor redColor]);
   FBTweakBind(_label, alpha, @"Content", @"Text", @"Alpha", 0.5, 0.0, 1.0);
   [_rootViewController.view addSubview:_label];
 
-  FBTweakBind(_rootViewController.view, backgroundColor, @"Content", @"Background", @"Color", [UIColor whiteColor], [UIColor whiteColor]);
+  FBTweakBind(_rootViewController.view, backgroundColor, @"Content", @"Background", @"Color", [UIColor whiteColor]);
 
   UITapGestureRecognizer *tapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(labelTapped)];
   [_label addGestureRecognizer:tapRecognizer];