Button3D: Questions About Appearance + Performance

[msDestiny14]

Got some help from the wonderful @Deltakosh @Evgeni_Popov

GUI Button3D with black text does not work

Hi, see PG https://playground.babylonjs.com/#7MHW65#1 if I set the text color to black it does not render, any other color seems to be fine. Is this expected behaviour? Seems odd to not be able to have black text. Regards, Mark.