Get RGBA-Value of obstruction from Surf_Id

Hi there,

I hope this place is the right spot for my question :)

I am currently developing an blender-addon for VR-Visualization of FDS-Simulations in blender. For this purpose, I would like to implement a function that extracts and imports the obstructions from an FDS simulation. Additionally, I need to check whether the components have been assigned a COLOR value or a Surf_Id with a RGB and Transparency value.

If obstructions have been directly assigned a Color value, the RGBA can be easily queried via fds.sim.obstructions[n].rgba.

But does fdsreader also have a function to query which Surf_Id has been assigned to the obstruction and how to extract the RGB and Transparency values from it?