Question Shader Graph Vertex Color Bias

HI Guys
When I use Shader Graph Vertex to show color , i found there is color bias

Vertex shader



Color Shader


the result


Left is vertex color , right is MainColor Shader, there are use the same color value.
But the vertex color has bias
Some color are the same just like :



It seems that the value of 255 or 0 will not be affected
Does anyone know why?
My unity version is 2019.4.35f1 , shader graph is 7.7.1

 

ok i Found it
https://forum.unity.com/threads/why-vertex-color-different-with-fragment-color.1259834/