To import into your scene, go to File> Attach, browse to the .blend file folder, open the file, open the "Group" folder or the Collection folder, double-click the group name and add.

You can also open the 3D object file and copy with (CTRL + C) and paste into your scene with (CTRL + V).

To change the color of the model, just enter the "Shading" tab and move the point in the "RGB Curves" node until you find the desired color. You can also change the "RGB Curves" C R G B buttons to find more colors.

All textures were downloaded from cc0textures.

Any questions, feel free to ask me.