For example in the log below, I set the lights to 20% brightness, set colour to 227 (blue), and then set devices on. The lights turn on immediately, but the color change isn't visible until after the devices return to normal status in AM which takes about a minute.
2024.07.28 08:47:12.436 doing "DFN_DW_Lights_ON_BL" (Rule 123) SetBrightness: [MH_LGHT_DW1_Keyhole, MH_LGHT_DW2_DogLeg, MH_LGHT_DW3_Fork, MH_LGHT_DW4_SteepBank, MH_LGHT_DW5_North, MH_LGHT_DW6_South] set to 20%...
2024.07.28 08:47:12.436 MH_LGHT_DW4_SteepBank(KL125_242FD0A50F33) is now pending
2024.07.28 08:47:12.448 MH_LGHT_DW5_North(KL125_74FECEB8C8D6) is now pending
2024.07.28 08:47:12.449 running DesiredState set brightness to 20 wait=false, type=brightness for MH_LGHT_DW4_SteepBank(KL125_242FD0A50F33)
2024.07.28 08:47:12.460 MH_LGHT_DW6_South(KL125_74FECEB8BEA7) is now pending
2024.07.28 08:47:12.460 running DesiredState set brightness to 20 wait=false, type=brightness for MH_LGHT_DW5_North(KL125_74FECEB8C8D6)
2024.07.28 08:47:12.470 MH_LGHT_DW1_Keyhole(KL125_242FD0A55F6F) is now pending
2024.07.28 08:47:12.470 running DesiredState set brightness to 20 wait=false, type=brightness for MH_LGHT_DW6_South(KL125_74FECEB8BEA7)
2024.07.28 08:47:12.478 MH_LGHT_DW2_DogLeg(KL125_242FD0A5153C) is now pending
2024.07.28 08:47:12.479 running DesiredState set brightness to 20 wait=false, type=brightness for MH_LGHT_DW1_Keyhole(KL125_242FD0A55F6F)
2024.07.28 08:47:12.488 running DesiredState set brightness to 20 wait=false, type=brightness for MH_LGHT_DW2_DogLeg(KL125_242FD0A5153C)
2024.07.28 08:47:12.489 MH_LGHT_DW3_Fork(KL125_242FD0A5474E) is now pending
2024.07.28 08:47:12.498 done "DFN_DW_Lights_ON_BL" (Rule 123) SetBrightness: [MH_LGHT_DW1_Keyhole, MH_LGHT_DW2_DogLeg, MH_LGHT_DW3_Fork, MH_LGHT_DW4_SteepBank, MH_LGHT_DW5_North, MH_LGHT_DW6_South] set to 20%
2024.07.28 08:47:12.498 running DesiredState set brightness to 20 wait=false, type=brightness for MH_LGHT_DW3_Fork(KL125_242FD0A5474E)
2024.07.28 08:47:12.498 doing "DFN_DW_Lights_ON_BL" (Rule 123) SetColor: [MH_LGHT_DW1_Keyhole, MH_LGHT_DW2_DogLeg, MH_LGHT_DW3_Fork, MH_LGHT_DW4_SteepBank, MH_LGHT_DW5_North, MH_LGHT_DW6_South] set to 227° at 100%...
2024.07.28 08:47:12.498 done "DFN_DW_Lights_ON_BL" (Rule 123) SetColor: [MH_LGHT_DW1_Keyhole, MH_LGHT_DW2_DogLeg, MH_LGHT_DW3_Fork, MH_LGHT_DW4_SteepBank, MH_LGHT_DW5_North, MH_LGHT_DW6_South] set to 227° at 100%
2024.07.28 08:47:12.499 doing "DFN_DW_Lights_ON_BL" (Rule 123) SetDevices: [MH_LGHT_DW1_Keyhole, MH_LGHT_DW2_DogLeg, MH_LGHT_DW3_Fork, MH_LGHT_DW4_SteepBank, MH_LGHT_DW5_North, MH_LGHT_DW6_South] to ON...
2024.07.28 08:47:12.499 MH_LGHT_DW4_SteepBank(KL125_242FD0A50F33) setting to on...
2024.07.28 08:47:12.499 MH_LGHT_DW5_North(KL125_74FECEB8C8D6) setting to on...
2024.07.28 08:47:12.499 MH_LGHT_DW6_South(KL125_74FECEB8BEA7) setting to on...
2024.07.28 08:47:12.499 MH_LGHT_DW1_Keyhole(KL125_242FD0A55F6F) setting to on...
2024.07.28 08:47:12.499 MH_LGHT_DW2_DogLeg(KL125_242FD0A5153C) setting to on...
2024.07.28 08:47:12.499 MH_LGHT_DW3_Fork(KL125_242FD0A5474E) setting to on...
2024.07.28 08:47:12.499 done "DFN_DW_Lights_ON_BL" (Rule 123) SetDevices: [MH_LGHT_DW1_Keyhole, MH_LGHT_DW2_DogLeg, MH_LGHT_DW3_Fork, MH_LGHT_DW4_SteepBank, MH_LGHT_DW5_North, MH_LGHT_DW6_South] to ON
2024.07.28 08:47:12.904 "DFN_DW_Lights_ON_BL" (Rule 123) SetBrightness on MH_LGHT_DW3_Fork(KL125_242FD0A5474E) succeeded
2024.07.28 08:47:12.904 MH_LGHT_DW3_Fork(KL125_242FD0A5474E): set brightness to 20 complete
2024.07.28 08:47:12.942 "DFN_DW_Lights_ON_BL" (Rule 123) SetBrightness on MH_LGHT_DW4_SteepBank(KL125_242FD0A50F33) succeeded
2024.07.28 08:47:12.942 MH_LGHT_DW4_SteepBank(KL125_242FD0A50F33): set brightness to 20 complete
2024.07.28 08:47:13.119 "DFN_DW_Lights_ON_BL" (Rule 123) SetBrightness on MH_LGHT_DW1_Keyhole(KL125_242FD0A55F6F) succeeded
2024.07.28 08:47:13.119 MH_LGHT_DW1_Keyhole(KL125_242FD0A55F6F): set brightness to 20 complete
2024.07.28 08:47:13.127 "DFN_DW_Lights_ON_BL" (Rule 123) SetBrightness on MH_LGHT_DW2_DogLeg(KL125_242FD0A5153C) succeeded
2024.07.28 08:47:13.127 MH_LGHT_DW2_DogLeg(KL125_242FD0A5153C): set brightness to 20 complete
2024.07.28 08:47:13.185 "DFN_DW_Lights_ON_BL" (Rule 123) SetBrightness on MH_LGHT_DW6_South(KL125_74FECEB8BEA7) succeeded
2024.07.28 08:47:13.185 MH_LGHT_DW6_South(KL125_74FECEB8BEA7): set brightness to 20 complete
2024.07.28 08:47:13.186 "DFN_DW_Lights_ON_BL" (Rule 123) SetBrightness on MH_LGHT_DW5_North(KL125_74FECEB8C8D6) succeeded
2024.07.28 08:47:13.186 MH_LGHT_DW5_North(KL125_74FECEB8C8D6): set brightness to 20 complete
2024.07.28 08:47:13.332 MH_LGHT_DW1_Keyhole(KL125_242FD0A55F6F) value = 20.0
2024.07.28 08:47:13.351 MH_LGHT_DW3_Fork(KL125_242FD0A5474E) value = 20.0
2024.07.28 08:47:13.435 MH_LGHT_DW4_SteepBank(KL125_242FD0A50F33) value = 20.0
2024.07.28 08:47:13.462 MH_LGHT_DW5_North(KL125_74FECEB8C8D6) value = 20.0
2024.07.28 08:47:13.481 MH_LGHT_DW6_South(KL125_74FECEB8BEA7) value = 20.0
2024.07.28 08:47:13.535 MH_LGHT_DW2_DogLeg(KL125_242FD0A5153C) value = 20.0
2024.07.28 08:47:15.574 running DesiredState setting color to 227°/100% wait=false, type=color for MH_LGHT_DW1_Keyhole(KL125_242FD0A55F6F)
2024.07.28 08:47:15.648 "DFN_DW_Lights_ON_BL" (Rule 123) SetColor on MH_LGHT_DW1_Keyhole(KL125_242FD0A55F6F) applied
2024.07.28 08:47:15.648 MH_LGHT_DW1_Keyhole(KL125_242FD0A55F6F): setting color to 227°/100% complete
2024.07.28 08:47:15.796 running DesiredState setting color to 227°/100% wait=false, type=color for MH_LGHT_DW2_DogLeg(KL125_242FD0A5153C)
2024.07.28 08:47:15.946 "DFN_DW_Lights_ON_BL" (Rule 123) SetColor on MH_LGHT_DW2_DogLeg(KL125_242FD0A5153C) applied
2024.07.28 08:47:15.946 MH_LGHT_DW2_DogLeg(KL125_242FD0A5153C): setting color to 227°/100% complete
2024.07.28 08:47:16.082 running DesiredState setting color to 227°/100% wait=false, type=color for MH_LGHT_DW3_Fork(KL125_242FD0A5474E)
2024.07.28 08:47:16.213 "DFN_DW_Lights_ON_BL" (Rule 123) SetColor on MH_LGHT_DW3_Fork(KL125_242FD0A5474E) applied
2024.07.28 08:47:16.213 MH_LGHT_DW3_Fork(KL125_242FD0A5474E): setting color to 227°/100% complete
2024.07.28 08:47:16.298 running DesiredState setting color to 227°/100% wait=false, type=color for MH_LGHT_DW4_SteepBank(KL125_242FD0A50F33)
2024.07.28 08:47:16.490 "DFN_DW_Lights_ON_BL" (Rule 123) SetColor on MH_LGHT_DW4_SteepBank(KL125_242FD0A50F33) applied
2024.07.28 08:47:16.490 MH_LGHT_DW4_SteepBank(KL125_242FD0A50F33): setting color to 227°/100% complete
2024.07.28 08:47:16.545 running DesiredState setting color to 227°/100% wait=false, type=color for MH_LGHT_DW5_North(KL125_74FECEB8C8D6)
2024.07.28 08:47:16.702 "DFN_DW_Lights_ON_BL" (Rule 123) SetColor on MH_LGHT_DW5_North(KL125_74FECEB8C8D6) applied
2024.07.28 08:47:16.702 MH_LGHT_DW5_North(KL125_74FECEB8C8D6): setting color to 227°/100% complete
2024.07.28 08:47:16.883 running DesiredState setting color to 227°/100% wait=false, type=color for MH_LGHT_DW6_South(KL125_74FECEB8BEA7)
2024.07.28 08:47:17.114 "DFN_DW_Lights_ON_BL" (Rule 123) SetColor on MH_LGHT_DW6_South(KL125_74FECEB8BEA7) applied
2024.07.28 08:47:17.115 MH_LGHT_DW6_South(KL125_74FECEB8BEA7): setting color to 227°/100% complete
2024.07.28 08:47:45.601 running DesiredState set to ON wait=false, type=power for MH_LGHT_DW1_Keyhole(KL125_242FD0A55F6F)
2024.07.28 08:47:45.792 "DFN_DW_Lights_ON_BL" (Rule 123) SetDevices on MH_LGHT_DW1_Keyhole(KL125_242FD0A55F6F) succeeded
2024.07.28 08:47:45.792 MH_LGHT_DW1_Keyhole(KL125_242FD0A55F6F): set to ON complete
2024.07.28 08:47:45.792 MH_LGHT_DW1_Keyhole(KL125_242FD0A55F6F) is now on
2024.07.28 08:47:45.901 running DesiredState set to ON wait=false, type=power for MH_LGHT_DW2_DogLeg(KL125_242FD0A5153C)
2024.07.28 08:47:46.088 "DFN_DW_Lights_ON_BL" (Rule 123) SetDevices on MH_LGHT_DW2_DogLeg(KL125_242FD0A5153C) succeeded
2024.07.28 08:47:46.088 MH_LGHT_DW2_DogLeg(KL125_242FD0A5153C): set to ON complete
2024.07.28 08:47:46.088 MH_LGHT_DW2_DogLeg(KL125_242FD0A5153C) is now on
2024.07.28 08:47:46.180 running DesiredState set to ON wait=false, type=power for MH_LGHT_DW3_Fork(KL125_242FD0A5474E)
2024.07.28 08:47:46.567 "DFN_DW_Lights_ON_BL" (Rule 123) SetDevices on MH_LGHT_DW3_Fork(KL125_242FD0A5474E) succeeded
2024.07.28 08:47:46.567 MH_LGHT_DW3_Fork(KL125_242FD0A5474E): set to ON complete
2024.07.28 08:47:46.567 MH_LGHT_DW3_Fork(KL125_242FD0A5474E) is now on
2024.07.28 08:47:46.652 running DesiredState set to ON wait=false, type=power for MH_LGHT_DW4_SteepBank(KL125_242FD0A50F33)
2024.07.28 08:47:46.720 running DesiredState set to ON wait=false, type=power for MH_LGHT_DW5_North(KL125_74FECEB8C8D6)
2024.07.28 08:47:46.832 "DFN_DW_Lights_ON_BL" (Rule 123) SetDevices on MH_LGHT_DW4_SteepBank(KL125_242FD0A50F33) succeeded
2024.07.28 08:47:46.832 MH_LGHT_DW4_SteepBank(KL125_242FD0A50F33): set to ON complete
2024.07.28 08:47:46.832 MH_LGHT_DW4_SteepBank(KL125_242FD0A50F33) is now on
2024.07.28 08:47:46.853 "DFN_DW_Lights_ON_BL" (Rule 123) SetDevices on MH_LGHT_DW5_North(KL125_74FECEB8C8D6) succeeded
2024.07.28 08:47:46.853 MH_LGHT_DW5_North(KL125_74FECEB8C8D6): set to ON complete
2024.07.28 08:47:46.853 MH_LGHT_DW5_North(KL125_74FECEB8C8D6) is now on
2024.07.28 08:47:47.077 running DesiredState set to ON wait=false, type=power for MH_LGHT_DW6_South(KL125_74FECEB8BEA7)
2024.07.28 08:47:47.287 "DFN_DW_Lights_ON_BL" (Rule 123) SetDevices on MH_LGHT_DW6_South(KL125_74FECEB8BEA7) succeeded
2024.07.28 08:47:47.287 MH_LGHT_DW6_South(KL125_74FECEB8BEA7): set to ON complete
2024.07.28 08:47:47.287 MH_LGHT_DW6_South(KL125_74FECEB8BEA7) is now on
Once that rule completes and device status is normal, I trigger EVNT_DW_Lights_ON_BL
It takes about a minute for the colour to change from blue to white.