Description:
Various textures are pale. You can slightly see them through the white. Bug doesn't appear in previous RoR versions or Test Builts.
How to reproduce:
Get this: http://www.rigsofrods.com/threads/71945-Mercedes-w460?p=801248&viewfull=1#post801248
Go to any map and look at the car.
It also happens with other vehicles.






I believe it has something do with missing specular images defined in the managedmaterials section.
Oh, that's possible. For the materials the bug appeared (on the Taunus) I didn't use any specular images because the materials are supposed to be matte. I can add a black image to the Taunus and use it as spe file, so it'd be an easy fix. Just, for backwards compabitility, [you can image what I will say] this should be fixed because as you can see it also happens with older (but good) vehicles whose author is inactive.
I believe that in previous versions it defaulted to something so that it didn't look white it was just super glossy.
I can confirm this as well, with a different truck too:

Yeah, happens with many vehicles. Finding them all, fixing and reuploading wouldn't work.
I added a texture black.png, being black and 1x1 pixel big, to the zip and used it as spec file for any fully matte material and it worked.
Bumping as I think it was being overseen by the devs.
Me too.
Spawner bug. I'm onto it.
This is caused by a missing/invalid spec texture:
wheel_b_01 flexmesh_standard Tire_02.jpg - Tire_02-s.jpg
tire_b_01 mesh_standard Tire_02.jpg Tire_02-s.jpg
Tire_02-s.jpg should be Tire_02_s.jpg -> fixed 
@Michael10055 So this was in fact a truckfile issue all the time?
Can you also check https://github.com/RigsOfRods/rigs-of-rods/issues/373#issuecomment-130423073 ?
@only-a-ptr It's fixed for every vehicle without specular file if you create a black 1x1px png/dds file, previous RoR version - I think - used a matte material as specular file (just what the black 1x1px image would do).
In case of the Mercedes, as Michael noticed, it was caused by a falsely named specular file which isn't existend in the zip with this name, so RoR threatened it as not specular file.
The old parser simply ignored the invalid file. @only-a-ptr most of @negativeice's vehicles have missing spec textures, as seen in @TechGiga's picture.
I think we need to overwork this file in order to fix it properly: https://github.com/RigsOfRods/rigs-of-rods/blob/master/bin/resources/managed_materials/managed_mats_vehicles.material
The old one looked like this: https://ptpb.pw/3UPZ.material
Old code: https://github.com/only-a-ptr/ror-legacy-svn-trunk/blob/master/source/main/physics/input_output/SerializedRig.cpp#L4854-L4871
New code: https://github.com/RigsOfRods/rigs-of-rods/blob/master/source/main/physics/RigSpawner.cpp#L2640-L2647
The old parser simply ignored the invalid file
@Michael10055

Maybe this issue fixed later some how?
@tritonas00 That's when you use OpenGL as renderer, isn't it?
Yes