docs: function ColorReplaceFilter(originalColor, newColor, epsilon) {
      PIXI.Filter.call(this,
          // vertex shader
          // vertex shader
          glslify('./colorReplace.vert'),
          // fragment shader
          glslify('./colorReplace.frag')
      );
  
      this.uniforms.originalColor = originalColor;
      this.uniforms.newColor = newColor;
      this.uniforms.epsilon = epsilon;
  }