Different voxel size for color

[k3xx]

Hello,

Is there a way to use different voxel resolution for the color grid when rendering colored smoke?

I have a vdb sequence of a smoke simulation, the density itself is around 250gb, if I add the color in the same resolution its 1000gb and it takes forever for octane to load each frame.

This would be easy to solve by resampling the color to half or quarter resolution which would take almost no extra space and look the same but octane doesn't load the color grid if its not the same resolution as the density.