Hi i use Gimp to change the color of the asteria but when i test in game 've a pink error color, what can i use to modifed it? i'll try blender with hull_asteria.obj.
Otherwise what can use?
Do I understand you correct - you were trying to change the texture color and it didn't work properly? We store textures in .jpg files so you can use any program which can edit .jpg files. But I think that you need to check if you saved everything properly. All files extensions, names etc. Because if you have a pink error that means that Unity cannot find a material.
thx i'll try with gimp
Additional Remark:
*.OBJ files are generally used to store 3d-point data of a model.
If you are unsure about how to open certain files, a websearch for "obj fileextenstion"
(as an example), will find several websites that help with information
about such files, what they are, how to open them, etc.