Loading in CAD model with colors

I have been trying to get a CAD *.step file converted to collada *.dae and to get shown in Gazebo with correct colors. I all cases it seems that I only get the grey uncolored version, when Gazebo loads the dae file. I am current using ROS indigo with the standard Gazebo distribution that is part of this release. In MeshLab I am able to see the colors correctly in the exported *.dae models:  I have also been attempting to convert using FreeCad, Rhinoceros, Blender, Solidworks. But I still ended up unable to display the colors from the step file. The way I include into gazebo the *.dae is the following: true0 0 0 0 0 0model://robotti_v3_solid/model/meshes/robot_body.daemodel://robotti_v3_solid/model/meshes/robot_body.dae Is there some method or program I can use, to convert my *step files into *.dae, to ensure gazebo is able to read the colors and display them correctly ? I have been looking trough the guides but have not bee able to find an answer to this problem. Re-coloring all components individually via sdf files, with just to much trouble, so I am looking for a better option. I have attached a link below to a few examples dae files with the same problem: [dae files](https://drive.google.com/folderview?id=0B9I081q8E3Ezc1d1anQwZ3N4MGc&usp=sharing) I was not able to attach them directly in this question since the *.dae format is not allowed. Also an example step file I have converted. According to meshlab they all contain color info.