According to this code node must slowly appear, right? It doesn't work. What is wrong?
CCNodeColor *_backNode = [CCNodeColor nodeWithColor:[CCColor colorWithRed:0 green:0 blue:0 alpha:1.0f]];
_backNode.opacity=0;
[self addChild:_backNode z:5];
[_backNode runAction:[CCActionFadeTo actionWithDuration:2 opacity:0.9]];
Try it with alpha = 0 and not setting opacity: