修改字体颜色

 CAGradientLayer *gradientLayer = [CAGradientLayerlayer];

    gradientLayer.frame = notiLabel.frame;

    gradientLayer.colors = [NSArrayarrayWithObjects:(id)ZXRGB(147,117, 28).CGColor,(id)ZXRGB(118,82, 26).CGColor, (id)ZXRGB(232,224, 112).CGColor,(id)ZXRGB(232,224, 112).CGColor,(id)ZXRGB(232,224, 112).CGColor,(id)ZXRGB(118,82, 26).CGColor,(id)ZXRGB(147,117, 28).CGColor,  nil];

    

    [self.bgScrollView.layeraddSublayer:gradientLayer];

    gradientLayer.mask = notiLabel.layer;

    notiLabel.frame = gradientLayer.bounds;