Shader in "Line" object seems can't get color property from outside.

Unity Engine
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1

I create a shader by shader graph and everything is fine until I want to get color property from outside(I mean the “Line” Object). Here are my shader graph nodes trying to get color property from outside:

5741491--603241--2020-04-21_104356.png
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I followed the tutorial from youtube:

used “Vertex Color”, but it doesn’t work to me. The “Line” object’s “Line Render” property is:

5741491--603244--2020-04-21_104649.png
5741491--603244--2020-04-21_104649.png656×926 56.3 KB

the object’s color is “orange”, but I tested directly connect to the “unlit master” node, it always white. Does anyone know how to fix this?

2

Everything looks correct to me. No idea why this wouldn’t be working. Try connecting the vertex color directly to the output? The only thing I can think of is it is orange, the graph is just multiplying it to be so bright that it appears white to you.