my bad… typos 
My worst enemy 
Nice!
May i ask what the problem was?
The decimal separator, the difference between a dot and a comma in different cultures. Essentially reading of the just written settings file failed because of that difference, and that combined with some… logic… caused Rhino to decide to remove the settings file.
1 Like
Ah.
Of course… Never thought of that… Dot and comma issues have always been a pain in the bum.
I have exactly the same problem. I followed the trail above, also with no luck. Very frustrating, I need higher contrast due to cataracts. 
Hi - could you please describe the problem? Also, run the Rhino SystemInfo command and paste the result here.
Rhino 6 SR14 2019-4-28 (Rhino 6, 6.14.19118.15561, Git hash:master @ 8f0a84997c310a7ec1a42cf2704da8daa33e3e21)
License type: Commercial, build 2019-04-28
License details: Cloud Zoo. In use by: Keith McIntyre ()
Windows 10.0 SR0.0 or greater (Physical RAM: 48Gb)
Machine name: DESKTOP-2LT4MPH
Non-hybrid graphics.
Primary display and OpenGL: NVIDIA Quadro P4000 (NVidia) Memory: 8GB, Driver date: 1-23-2018 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 390.77
Secondary graphics devices.
Intel® HD Graphics 530 (Intel) Memory: 1GB, Driver date: 10-27-2017 (M-D-Y).
OpenGL Settings
Safe mode: Off
Use accelerated hardware modes: On
Redraw scene when viewports are exposed: On
Anti-alias mode: 4x
Mip Map Filtering: Linear
Anisotropic Filtering Mode: Height
Vendor Name: NVIDIA Corporation
Render version: 4.6
Shading Language: 4.60 NVIDIA
Driver Date: 1-23-2018
Driver Version: 23.21.13.9077
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 8 GB
Rhino plugins
C:\Program Files\Rhino 6\Plug-ins\Commands.rhp “Commands” 6.14.19118.15561
C:\Program Files\Rhino 6\Plug-ins\WebBrowser.rhp “WebBrowser”
C:\Program Files\Rhino 6\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 6\Plug-ins\RhinoScript.rhp “RhinoScript”
C:\Program Files\Rhino 6\Plug-ins\IdleProcessor.rhp “IdleProcessor”
C:\Program Files\Rhino 6\Plug-ins\RhinoRender.rhp “Rhino Render”
C:\Program Files\Rhino 6\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 6.14.19118.15561
C:\Program Files\Rhino 6\Plug-ins\rdk_ui.rhp “Renderer Development Kit UI”
C:\Program Files\Rhino 6\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 6\Plug-ins\Alerter.rhp “Alerter”
C:\Program Files\Rhino 6\Plug-ins\RhinoCycles.rhp “RhinoCycles” 6.14.19118.15561
C:\Program Files\Rhino 6\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 6.14.19118.15561
C:\Program Files\Rhino 6\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 6\Plug-ins\Displacement.rhp “Displacement”
Restarted, update installed, working now! 
Many thanks!
Keith
Stop the presses! It worked for crosshaircolor, but not for selectedobjectcolor. What the heck?
Rhino 6 SR15 2019-5-21 (Rhino 6, 6.15.19141.8361, Git hash:master @ 909b4c6880294c7dc68b81c149edcd0f71a897cb)
License type: Commercial, build 2019-05-21
License details: Cloud Zoo. In use by: Keith McIntyre ()
Windows 10.0 SR0.0 or greater (Physical RAM: 48Gb)
Machine name: DESKTOP-2LT4MPH
Non-hybrid graphics.
Primary display and OpenGL: NVIDIA Quadro P4000 (NVidia) Memory: 8GB, Driver date: 1-23-2018 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 390.77
Secondary graphics devices.
Intel® HD Graphics 530 (Intel) Memory: 1GB, Driver date: 10-27-2017 (M-D-Y).
OpenGL Settings
Safe mode: Off
Use accelerated hardware modes: On
Redraw scene when viewports are exposed: On
Anti-alias mode: 4x
Mip Map Filtering: Linear
Anisotropic Filtering Mode: Height
Vendor Name: NVIDIA Corporation
Render version: 4.6
Shading Language: 4.60 NVIDIA
Driver Date: 1-23-2018
Driver Version: 23.21.13.9077
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 8 GB
Rhino plugins
C:\Program Files\Rhino 6\Plug-ins\Commands.rhp “Commands” 6.15.19141.8361
C:\Program Files\Rhino 6\Plug-ins\WebBrowser.rhp “WebBrowser”
C:\Program Files\Rhino 6\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 6\Plug-ins\RhinoScript.rhp “RhinoScript”
C:\Program Files\Rhino 6\Plug-ins\IdleProcessor.rhp “IdleProcessor”
C:\Program Files\Rhino 6\Plug-ins\RhinoRender.rhp “Rhino Render”
C:\Program Files\Rhino 6\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 6.15.19141.8361
C:\Program Files\Rhino 6\Plug-ins\rdk_ui.rhp “Renderer Development Kit UI”
C:\Program Files\Rhino 6\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 6\Plug-ins\Alerter.rhp “Alerter”
C:\Program Files\Rhino 6\Plug-ins\RhinoCycles.rhp “RhinoCycles” 6.15.19141.8361
C:\Program Files\Rhino 6\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 6.15.19141.8361
C:\Program Files\Rhino 6\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 6\Plug-ins\Displacement.rhp “Displacement”
Could you describe the steps that you are taking and what is happening as a result?
New model, small, inches
Select tools/options/advanced
Select Rhino.Options.Appearance.SelectedObjectColor Currently #ED1268FF (Red)
Double click on the red box
Select Green
Click OK
Box is green
Close Options
Save MT dwg as untitled
Close
An update tried to intervene, I ignored for continuity
Opened ‘untitled’
Select tools/options/advanced
Select Rhino.Options.Appearance.SelectedObjectColor Currently #ED1268FF (Red)!!!
I think I was able to reproduce this once but now am unable to do so anymore.
What happens when you change the color through the Rhino Options > Appearance > Colors > Object display > Selected objects dialog?
After that, create an object and check that the selection color is correct. Exit and don’t save. Restart Rhino. Does the color stick?
yes it stayed in the next new drawing AND of one of my existing models and in the options/advanced /selected objects.
Thanks