Thanks for the response. In this instance, the colour data may either be used for colouring as usual - or in other cases may be used by a shader for effects (e.g. texture splatting). I can think of workarounds without using the vertex colour array, but it would be ideal to be able to leverage it. The main point of this question is just making sure I didn’t miss anything in the docs that would allow me to be able to do this without rolling my own code. If not, that’s fine.