Weird colors are showing up on procedurally generated mesh

[stacho]

Hi,
I am generating mesh with material of tk2d solid vertex shader which has set up white texture. However, from time to time, there are rendered weird colors on the mesh and I can't figure out why. I am attaching pic for clear understanding.
I appreciate any advice, thank you.

[unikronsoftware]

Did you create vertex colors? The built in shaders use vertex colors, and if you didn't create them they'll get random values.

[stacho]

You are right. Thank you very much