Appraise and Discover: Immediately after making a call, overview the outcomes and learn from both successes and issues.上面是取色环。外面的圈，拖动可以改变色相，中间的方框可以改变明度和饱和度。After the 31 days demo interval expired and if you'd like to carry on using PaintTool SAI, you must purchase a "Software program