How to set(switch to) a dark mode theme in Cinnamon

Running the Cinnamon version (based on gnome so posting here) on an amd64 machine.

I installed a cinnamon applet to switch to/from dark mode. That doesn’t work, but…

I see no way in the cinnamon themes to set a dark mode theme. There is only a theme setting for “applications”

If I can get that working I would like the option to have dark mode on based on TOD but I see no setting in cinnamon for that either.

System:
  Kernel: 6.1.31-2-MANJARO arch: x86_64 bits: 64 compiler: gcc v: 13.1.1 Desktop: Cinnamon v: 5.6.8
    tk: GTK v: 3.24.37 dm: LightDM Distro: Manjaro Linux base: Arch Linux
Machine:
  Type: Desktop System: Micro (HK) Tech product: Neptune series(i9) v: N/A
    serial: <superuser required>
  Mobo: Shenzhen Meigao Equipment model: AHBAA serial: <superuser required> UEFI: American
    Megatrends LLC. v: 1.09 date: 12/08/2022
Battery:
  Device-1: hidpp_battery_0 model: Logitech MX Master 3 for Mac serial: <filter> charge: 100%
    (should be ignored) status: discharging
  Device-2: hidpp_battery_1 model: Logitech MX Keys for Mac serial: <filter> charge: 100%
    (should be ignored) status: discharging
CPU:
  Info: 14-core (6-mt/8-st) model: 12th Gen Intel Core i9-12900H bits: 64 type: MST AMCP
    arch: Alder Lake rev: 3 cache: L1: 1.2 MiB L2: 11.5 MiB L3: 24 MiB
  Speed (MHz): avg: 2554 high: 2900 min/max: 400/4900:5000:3800 cores: 1: 2900 2: 2900 3: 2900
    4: 2900 5: 2900 6: 2900 7: 713 8: 2900 9: 2900 10: 680 11: 2900 12: 2900 13: 2900 14: 2900
    15: 2900 16: 2900 17: 400 18: 2900 19: 2900 20: 2900 bogomips: 116780
  Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
Graphics:
  Device-1: Intel Alder Lake-P Integrated Graphics driver: i915 v: kernel arch: Gen-12.2 ports:
    active: DP-1,DP-2,HDMI-A-2 empty: HDMI-A-1 bus-ID: 00:02.0 chip-ID: 8086:46a6
  Display: x11 server: X.Org v: 21.1.8 driver: X: loaded: modesetting alternate: fbdev,vesa
    dri: iris gpu: i915 display-ID: :0 screens: 1
  Screen-1: 0 s-res: 6200x1920 s-dpi: 96
  Monitor-1: DP-1 pos: primary,right model: Gigabyte G32QC A res: 2560x1440 dpi: 93
    diag: 800mm (31.5")
  Monitor-2: DP-2 pos: center model: Gigabyte G32QC A res: 2560x1440 dpi: 93 diag: 800mm (31.5")
  Monitor-3: HDMI-A-2 mapped: HDMI-2 pos: left model: M240A1 res: 1080x1920 dpi: 133
    diag: 599mm (23.6")
  API: OpenGL Message: Unable to show GL data. Required tool glxinfo missing.
Audio:
  Device-1: Intel Alder Lake PCH-P High Definition Audio driver: snd_hda_intel v: kernel
    bus-ID: 00:1f.3 chip-ID: 8086:51c8
  API: ALSA v: k6.1.31-2-MANJARO status: kernel-api with: aoss type: oss-emulator
  Server-1: JACK v: 1.9.22 status: off
  Server-2: PipeWire v: 0.3.70 status: off
  Server-3: PulseAudio v: 16.1 status: active with: pulseaudio-alsa type: plugin
Network:
  Device-1: Intel Ethernet I225-V driver: igc v: kernel pcie: speed: 5 GT/s lanes: 1 port: N/A
    bus-ID: 02:00.0 chip-ID: 8086:15f3
  IF: enp2s0 state: up speed: 1000 Mbps duplex: full mac: <filter>
  Device-2: Intel Wi-Fi 6 AX210/AX211/AX411 160MHz driver: iwlwifi v: kernel pcie: speed: 5 GT/s
    lanes: 1 bus-ID: 03:00.0 chip-ID: 8086:2725
  IF: wlp3s0 state: up mac: <filter>
  IF-ID-1: br-4571187ea2dd state: up speed: 10000 Mbps duplex: unknown mac: <filter>
  IF-ID-2: br-608e4eba66b2 state: up speed: 10000 Mbps duplex: unknown mac: <filter>
  IF-ID-3: br-8e0ecce8a65e state: down mac: <filter>
  IF-ID-4: br-9a8d6878ab74 state: up speed: 10000 Mbps duplex: unknown mac: <filter>
  IF-ID-5: br-cb8bf3a4ef24 state: down mac: <filter>
  IF-ID-6: br-d46795acbb93 state: down mac: <filter>
  IF-ID-7: docker0 state: down mac: <filter>
  IF-ID-8: veth36ee037 state: up speed: 10000 Mbps duplex: full mac: <filter>
  IF-ID-9: vetha5d3e8d state: up speed: 10000 Mbps duplex: full mac: <filter>
  IF-ID-10: vethe05d45d state: up speed: 10000 Mbps duplex: full mac: <filter>
Bluetooth:
  Device-1: Intel AX210 Bluetooth driver: btusb v: 0.8 type: USB rev: 2.0 speed: 12 Mb/s lanes: 1
    bus-ID: 1-6:11 chip-ID: 8087:0032
  Report: rfkill ID: hci0 rfk-id: 1 state: up address: see --recommends
Drives:
  Local Storage: total: 3.22 TiB used: 579.87 GiB (17.6%)
  ID-1: /dev/nvme0n1 vendor: Kingston model: OM8PGP4512Q-A0 size: 476.94 GiB speed: 63.2 Gb/s
    lanes: 4 serial: <filter> temp: 40.9 C
  ID-2: /dev/sda vendor: Western Digital model: WD10SPSX-22A6WT0 size: 931.51 GiB speed: 6.0 Gb/s
    serial: <filter>
  ID-3: /dev/sdb vendor: Western Digital model: WD10SPSX-22A6WT0 size: 931.51 GiB speed: 6.0 Gb/s
    serial: <filter>
  ID-4: /dev/sdc vendor: Western Digital model: WD10SDZW-11UMGS0 size: 931.48 GiB type: USB
    rev: 3.0 spd: 5 Gb/s lanes: 1 serial: <filter>
  ID-5: /dev/sdd vendor: PNY model: USB 2.0 FD size: 14.86 GiB type: USB rev: 2.0 spd: 480 Mb/s
    lanes: 1 serial: <filter>
  ID-6: /dev/sde vendor: Generic model: STORAGE DEVICE size: 14.68 GiB type: USB rev: 2.0
    spd: 480 Mb/s lanes: 1 serial: <filter>
Partition:
  ID-1: / size: 332.03 GiB used: 126.59 GiB (38.1%) fs: btrfs dev: /dev/nvme0n1p5
  ID-2: /boot/efi size: 96 MiB used: 28.6 MiB (29.8%) fs: vfat dev: /dev/nvme0n1p1
  ID-3: /home size: 332.03 GiB used: 126.59 GiB (38.1%) fs: btrfs dev: /dev/nvme0n1p5
  ID-4: /opt size: 332.03 GiB used: 126.59 GiB (38.1%) fs: btrfs dev: /dev/nvme0n1p5
  ID-5: /var/log size: 332.03 GiB used: 126.59 GiB (38.1%) fs: btrfs dev: /dev/nvme0n1p5
Swap:
  ID-1: swap-1 type: partition size: 16 GiB used: 0 KiB (0.0%) priority: -2 dev: /dev/nvme0n1p6
Sensors:
  System Temperatures: cpu: 37.0 C mobo: N/A
  Fan Speeds (RPM): N/A
Repos:
  Packages: 1323 pm: pacman pkgs: 1318 pm: flatpak pkgs: 5
  Active pacman repo servers in: /etc/pacman.d/mirrorlist
    1: https: //mirrors.ocf.berkeley.edu/manjaro/stable/$repo/$arch
    2: https: //mirrors.gigenet.com/manjaro/stable/$repo/$arch
    3: https: //mirror.math.princeton.edu/pub/manjaro/stable/$repo/$arch
    4: https: //mirror.cyberhost.uk/sites/manjaro/stable/$repo/$arch
    5: https: //edgeuno-bog2.mm.fcix.net/manjaro/stable/$repo/$arch
    6: https: //mirror.easyname.at/manjaro/stable/$repo/$arch
    7: https: //ftpmirror1.infania.net/mirror/manjaro/stable/$repo/$arch
    8: https: //mirror.ufro.cl/manjaro/stable/$repo/$arch
Info:
  Processes: 541 Uptime: 18m Memory: available: 15.4 GiB used: 6.42 GiB (41.7%) Init: systemd
  v: 253 default: graphical Compilers: gcc: 13.1.1 clang: 15.0.7 Client: Cinnamon v: 5.6.8
  inxi: 3.3.27

I found some settings in that applet for themes for light and dark.

It’s not ideal and I can’t get chromium to switch it’s background from white to black and back with the “auto dark mode” enabled.

So I guess I’ve answered my own question for now.