http://www.hangge.com/blog/cache/detail_957.html
修改返回按钮
//修改导航条背景色（红褐色）
self.navigationController.navigationBar.barTintColor = RGB(175, 24, 50, 1.0);
其中RGB为我的工程里的一个宏定义:
#define RGB(r,g,b,a) [UIColor colorWithRed:(r/255.0) green:(g/255.0) blue:(b/255.0) alpha:(a)]
//修改导航条标题颜色（白色）
[self.navigationController.navigationBar setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:[UIColor whiteColor],NSForegroundColorAttributeName,nil]];
//修改导航条添加的按钮（item）颜色(黄色)
self.navigationController.navigationBar.tintColor = [UIColor yellowColor];
需要注意一点: 这个设置完成之后，从他push过去的页面颜色都是这种效果。
导航条颜色
---设置tabbar图片####
/**
消息
*/
Message *message =[[Message alloc]init];
UIImage *mImage = [UIImage imageNamed:@"oneUnSelect"];
UIImage *selectmImage = [UIImage imageNamed:@"oneSelect"];
mImage = [mImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
selectmImage = [selectmImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
message.tabBarItem = [[UITabBarItem alloc]initWithTitle:@"消息" image:mImage selectedImage:selectmImage];
NavigationController *messageNa = [[NavigationController alloc]initWithRootViewController:message];
