With these pixel coordinates, we can draw lines emanating from the the points, recolor them, connect them, fill the surrounding area with color, or anything else GD can do.

使用这些像素坐标，我们可以绘制以这些点为起点的直线，重新设定直线的颜色、连接直线、用颜色填充周围的区域或者 GD 可以执行的任何其他操作。

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Next we save this state and make changes to the fill color. We then draw the second and smaller blue rectangle and save the state.

改变填充颜色画第二个小一点的蓝色四方形，然后再保存一下状态。

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Color: we check the incoming leather with color swatch, and fill in the report with percentage if any color shading.

用色办对比检查来料，有偏差时用佰分比方法填报。

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If painting the colors back in sounds like hard work, there's also an automatic fill tool to detect edges and colors and either fill in or remove the color automatically from a selection (although we had mixed results using this tool).

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