I updated V7 SR 30 release candidate this morning. Shaded view as well as the other display options except for Arctic , have this rainbow effect on a model. The question is , how do I remove it?—Mark
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I am seeing a similar display.
Updated to Rhino 7 SR30 2023-5-5.
Started Rhino 7.
Created several objects.
Shaded mode display.
Rhino 7 SR30 2023-5-5 (Rhino 7, 7.30.23125.03001, Git hash:master @ df8ce18baed71f12ede6baf85bdcca53d8301122)
License type: Commercial, build 2023-05-05
License details: Cloud Zoo
Windows 11 (10.0.22621 SR0.0) or greater (Physical RAM: 64Gb)
Computer platform: DESKTOP
Standard graphics configuration.
Primary display and OpenGL: NVIDIA GeForce RTX 2080 Ti (NVidia) Memory: 11GB, Driver date: 4-8-2023 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 531.61
> Accelerated graphics device with 4 adapter port(s)
- Windows Main Display attached to adapter port #0
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: 4-8-2023
Driver Version: 31.0.15.3161
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 11 GB
Rhino plugins that do not ship with Rhino
C:\Program Files\Orca3D V2\Orca3D.rhp “Orca3D” 2.0.23.0
Rhino plugins that ship with Rhino
C:\Program Files\Rhino 7\Plug-ins\Commands.rhp “Commands” 7.30.23125.3001
C:\Program Files\Rhino 7\Plug-ins\WebBrowser.rhp “WebBrowser”
C:\Program Files\Rhino 7\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 7\Plug-ins\RhinoScript.rhp “RhinoScript”
C:\Users\dcock\AppData\Roaming\McNeel\Rhinoceros\packages\7.0\PanelingTools\2021.3.2.446\PanelingTools.rhp “PanelingTools”
C:\Program Files\Rhino 7\Plug-ins\IdleProcessor.rhp “IdleProcessor”
C:\Program Files\Rhino 7\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 7.30.23125.3001
C:\Program Files\Rhino 7\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 7.30.23125.3001
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\Alerter.rhp “Alerter”
C:\Program Files\Rhino 7\Plug-ins\RhinoCycles.rhp “RhinoCycles” 7.30.23125.3001
C:\Program Files\Rhino 7\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 7.30.23125.3001
C:\Program Files\Rhino 7\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 7\Plug-ins\Displacement.rhp “Displacement”
C:\Program Files\Rhino 7\Plug-ins\Calc.rhp “Calc”
@markintheozarks I modified your title for the thread to make it clear this is a bug.
I was thinking it is only my problem:
Me too!
Please tell us how to turn it off. I need to send images to clients, and I can’t send them through with rainbow colours. 
I downloaded and installed the latest Service Release to fix the problem.
Unfortunately it seemed to be the latest service release which rainbowed it for me.
@richard.aubin Which version did you download and install? Which version did you have installed previously?
I cannot download either a new Service Release nor Service Release Candidate. The system says I have the newest version installed. Rhino 7 SR30 2023-5-5
@gils You mentioned in another thread
That YT is not publicly available yet.
I assume releasing a workaround or fix for this issue will have extremely high priority when Seattle wakes up.
Rhino - Downloads (rhino3d.com)
Downloaded the non evaluation version, and I also uninstalled what I already had.
Makes sense. I’d like to avoid uninstalling if possible.
I had no issues with reinstalling. Everything is exactly where it was upon launching. Your call friend.
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I’ve just uninstalled and reinstalled. It’s working again. All my custom buttons etc… are still there.
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Looks like the environment map (rhino_shaded_mode_emap_background.png) used for the Shaded view was swapped with another one that produces that rainbow-like texture. It would be easier for those who have the issue described in this topic to simply replace the wrong environment map with the proper one. Its folder is C:\Program Files\Rhino 7\System
Alternatively, as a temporary solution, they could make a custom viewport mode that uses the exact same settings like the default Shaded view and set the same environment map stored in some folder of their liking. Not the best solution, but still could help until an official fix is published. This one has some custom settings done by me, but they could be changed by you according to your liking:
Shaded 2.ini (13.9 KB)
I also posted it here:
Bobbi, have you test this or is it an assumption? Would the environment map also cause the objects to become semi-transparent?
I uninstalled SRC 30 and installed the SR 29. Everything appears to be working as intended.
Sorry about this. We just shipped a new 7.30 RC with a fix for this issue.
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Things happen! Thank you-Mark
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The screenshots above clearly show a totally different environment map. This is why my assumption is that for some reason the Shaded view no longer used the proper environment map in Rhino 7 SR30.
its a bug, 7.30 is the fix as dan posted above