Custom Theme not working in PCB Kicad 6

I tried to create a custom theme, then try to edit colors in the appearance manager and get a warning about “theme is write-only”. Anything else I need to do?

The project I am working on was created in v5.99 (I think) with another custom theme.

Anything I should check?

Application: KiCad PCB Editor

Version: (6.0.4-0), release build

Libraries:
wxWidgets 3.1.5
libcurl/7.79.1 SecureTransport (LibreSSL/3.3.5) zlib/1.2.11 nghttp2/1.45.1

Platform: macOS Version 12.3.1 (Build 21E258), 64 bit, Little endian, wxMac

Build Info:
Date: Mar 17 2022 21:21:05
wxWidgets: 3.1.5 (wchar_t,wx containers)
Boost: 1.78.0
OCC: 7.6.1
Curl: 7.64.1
ngspice: 35
Compiler: Clang 12.0.0 with C++ ABI 1002

Build settings:
KICAD_USE_OCC=ON
KICAD_SPICE=ON

Preferences / Preferences in PCB editor should bring up a selection in both Schema. & PCB for colours.

Click on Colors and then select “New Theme”. This should get you there.

I thought I had done that. Maybe I missed OK button in the lower right. Thanks, I got it working.