tinkercad is an online free Autodesk app and very very easy you should try. Texture is possible while designing and slicing steps. I will try at future projects. This is for test made from PLA. Here is vey hot and now its summer. If it melts or deforms i will try printing with ABS with texture and maybe darker color.Damn, I need to get into 3D printing. Where do I learn? That's pretty cool. Can you 3D print more or less the same texture as the OEM panel? Or does that require more of a mould?
I see that vent now. Not as familiar with your interiors there.same color with air vent grill at the photo, i will try darker color ABS material when i have. I have white, yellow, wood and gray PLA for now. Best option was gray.