How to create outlines with different colors at same time

Questions
1

In my project i use three.js created many Mesh with ShapeGeometry，i want to create outlines to every ShapeGeometry with different colors，can you give me any help?
like this sample but i want to create outlines to every ShapeGeometry with different colors at same time : https://threejs.org/examples/?q=outline#webgl_postprocessing_outline

2

One way to solve it: You store a color value for each mesh in Object3D.userData like so:

shapeMesh.userData.outlineColor = new Color( 0xffffff * Math.random() );

When you select an object, you access this color value and set it to the visibleEdgeColor property of OutlinePass.

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3

Can I select multiple shapes in this way and display their outline in different colors at the same time?

4

It’s possible to select multiple objects but not in different colors. OutlinePass can only handle a single color for the outline effect.

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6

Then, is there other ways could?