CCSprite *spriteWithColor (ccColor4F bgColor,	float textureSize){
		//1: Create new CCRenderTexture
		rt = CCRenderTexture::renderTextureWithWidthAndHeight(textureSize,textureSize);
		// 2: Call CCRenderTexture:begin
		rt->beginWithClear(bgColor.r, bgColor.g, bgColor.b, bgColor.a);
		// 3: Draw into the texture
		glDisable(GL_TEXTURE_2D);
		glDisableClientState(GL_TEXTURE_COORD_ARRAY);

		float gradientAlpha = 0.7;
		CGPoint vertices[4];
		ccColor4F colors[4];
		int nVertices = 0;

		vertices[nVertices] = CGPointMake(0, 0);
		nVertices = nVertices++;  //now it's 1
		colors[nVertices] = (ccColor4F){0, 0, 0, 0 };
		vertices[nVertices] = CGPointMake(textureSize, 0);
		nVertices = nVertices++;  //now it's 2
		colors[nVertices] = (ccColor4F){0, 0, 0, 0};
		vertices[nVertices] = CGPointMake(0, textureSize);
		nVertices = nVertices++; //now it's 3
		colors[nVertices] = (ccColor4F){0, 0, 0, gradientAlpha};
		vertices[nVertices] = CGPointMake(textureSize, textureSize);
		nVertices = nVertices++;  //now it's 4
		colors[nVertices++] = (ccColor4F){0, 0, 0, gradientAlpha};

		glVertexPointer(2, GL_FLOAT, 0, vertices);
		glColorPointer(4, GL_FLOAT, 0, colors);
		glDrawArrays(GL_TRIANGLE_STRIP, 0, (GLsizei)nVertices);

		glEnableClientState(GL_TEXTURE_COORD_ARRAY);
		glEnable(GL_TEXTURE_2D);

		CCSprite* noise = CCSprite::spriteWithFile("Noise.png");
		noise->setBlendFunc((ccBlendFunc){GL_DST_COLOR, GL_ZERO});
		noise->setPosition(ccp(textureSize/2, textureSize/2));
		noise->visit();  //recursive method that visit its children and draw them , part of node

		// 4: Call CCRenderTexture:end
		rt->end();

		// 5: Create a new Sprite from the texture
		return CCSprite::spriteWithTexture(rt.sprite.texture);
	}