Files Saved on WHITE Layers come in as black

I’m saving DWG files with white layers. On open they are coming in as black layers (in Rhino 7).

My export settings are using the Autocad Color Index. The layers are all being saved with 255,255,255.

I have a coworker that when opening my files sees them as white.

Is there another setting I need to make? Or is this working as intended? (not a bug or setting)?

TEST_2D.dwg (27.6 KB)

-------------- System Info -------------------------

Rhino 7 SR10 2021-9-13 (Rhino 7, 7.10.21256.17001, Git hash:master @ 68677dc86520a0de9485d8b8fa2e841e757733f3)
License type: Commercial, build 2021-09-13
License details: Stand-Alone

Windows 10.0.19042 SR0.0 or greater (Physical RAM: 32Gb)

Computer platform: DESKTOP

Standard graphics configuration.
Primary display and OpenGL: NVIDIA Quadro P2000 (NVidia) Memory: 5GB, Driver date: 7-12-2021 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 471.41
> Accelerated graphics device with 4 adapter port(s)
- Windows Main Display attached to adapter port #0
- Secondary monitor attached to adapter port #1

OpenGL Settings
Safe mode: Off
Use accelerated hardware modes: On
Redraw scene when viewports are exposed: On
Graphics level being used: OpenGL 4.6 (primary GPU’s maximum)

Anti-alias mode: 4x
Mip Map Filtering: Linear
Anisotropic Filtering Mode: High

Vendor Name: NVIDIA Corporation
Render version: 4.6
Shading Language: 4.60 NVIDIA
Driver Date: 7-12-2021
Driver Version: 30.0.14.7141
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 5 GB

Rhino plugins that do not ship with Rhino
C:\Program Files\Chaos Group\V-Ray\V-Ray for Rhinoceros\V7\VRayForRhino.rhp “V-Ray for Rhino”

Rhino plugins that ship with Rhino
C:\Program Files\Rhino 7\Plug-ins\Commands.rhp “Commands” 7.10.21256.17001
C:\Program Files\Rhino 7\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 7\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 7.10.21256.17001
C:\Program Files\Rhino 7\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 7.10.21256.17001
C:\Program Files\Rhino 7\Plug-ins\rdk_ui.rhp “Renderer Development Kit UI”
C:\Program Files\Rhino 7\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 7\Plug-ins\RhinoCycles.rhp “RhinoCycles” 7.10.21256.17001
C:\Program Files\Rhino 7\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 7.10.21256.17001
C:\Program Files\Rhino 7\Plug-ins\Displacement.rhp “Displacement”