Okay, hope this is of some help…
When setting a color temperature:
2020-12-12 11:09:49.815 [ome.event.ItemCommandEvent] - Item 'Light_BaR_Mirror_ColorTemp' received command 5000
2020-12-12 11:09:49.860 [nt.ItemStatePredictedEvent] - Light_BaR_Mirror_ColorTemp predicted to become 5000
==> /var/log/openhab2/openhab.log <==
2020-12-12 11:09:49.867 [TRACE] [nz.internal.StateDescriptionProvider] - returning new stateDescription for deconz:extendedcolorlight:homeserver:842e14fffe343fcc01:color_temperature
2020-12-12 11:09:49.880 [TRACE] [nz.internal.StateDescriptionProvider] - returning new stateDescription for deconz:extendedcolorlight:homeserver:842e14fffe343fcc01:color_temperature
2020-12-12 11:09:49.885 [TRACE] [nz.internal.StateDescriptionProvider] - returning new stateDescription for deconz:extendedcolorlight:homeserver:842e14fffe343fcc01:color_temperature
2020-12-12 11:09:49.890 [TRACE] [nz.internal.StateDescriptionProvider] - returning new stateDescription for deconz:extendedcolorlight:homeserver:842e14fffe343fcc01:color_temperature
2020-12-12 11:09:49.900 [TRACE] [z.internal.handler.LightThingHandler] - Sending {"ct":200} to light 46 via http://192.168.10.2:80/api/F86D8D32FD/lights/46/state
2020-12-12 11:09:49.908 [TRACE] [nz.internal.StateDescriptionProvider] - returning new stateDescription for deconz:extendedcolorlight:homeserver:842e14fffe343fcc01:color_temperature
2020-12-12 11:09:49.914 [TRACE] [nz.internal.StateDescriptionProvider] - returning new stateDescription for deconz:extendedcolorlight:homeserver:842e14fffe343fcc01:color_temperature
2020-12-12 11:09:49.911 [TRACE] [nternal.netutils.WebSocketConnection] - Raw data received by websocket: {"e":"changed","id":"46","r":"lights","state":{"alert":null,"bri":17,"colormode":"ct","ct":200,"effect":null,"hue":0,"on":true,"reachable":true,"sat":254,"xy":[0.3368,0.6262]},"t":"event","uniqueid":"84:2e:14:ff:fe:34:3f:cc-01"}
2020-12-12 11:09:49.916 [TRACE] [z.internal.handler.LightThingHandler] - Result code=200, body=[{"success":{"/lights/46/state/ct":200}}]
2020-12-12 11:09:49.921 [TRACE] [nz.internal.StateDescriptionProvider] - returning new stateDescription for deconz:extendedcolorlight:homeserver:842e14fffe343fcc01:color_temperature
2020-12-12 11:09:49.927 [TRACE] [z.internal.handler.LightThingHandler] - deconz:extendedcolorlight:homeserver:842e14fffe343fcc01 received LightMessage{hascolor=null, ctmax=null, ctmin=null, type=null, state=LightState{reachable=true, on=true, bri=17, alert='null', colormode='ct', effect='null', hue=0, sat=254, ct=200, xy=[0.3368, 0.6262], transitiontime=null}, e='changed', r='lights', t='event', id='46', manufacturername='', modelid='', name='', swversion='', ep='', uniqueid='84:2e:14:ff:fe:34:3f:cc-01'}
2020-12-12 11:09:49.929 [TRACE] [nz.internal.StateDescriptionProvider] - returning new stateDescription for deconz:extendedcolorlight:homeserver:842e14fffe343fcc01:color_temperature
2020-12-12 11:09:49.937 [DEBUG] [z.internal.handler.LightThingHandler] - val = '254', scaledValue = '100'
2020-12-12 11:09:49.943 [DEBUG] [z.internal.handler.LightThingHandler] - val = '17', scaledValue = '7'
==> /var/log/openhab2/events.log <==
2020-12-12 11:09:49.973 [vent.ItemStateChangedEvent] - Light_BaR_Mirror_Color changed from 96,100,7 to 0.0,100,7
Afterwards when trying to set a Color and nothing happens:
2020-12-12 11:17:05.668 [ome.event.ItemCommandEvent] - Item 'Light_BaR_Mirror_Color' received command 309.827576,90.980392,7.000000
2020-12-12 11:17:05.712 [nt.ItemStatePredictedEvent] - Light_BaR_Mirror_Color predicted to become 309.827576,90.980392,7.000000
==> /var/log/openhab2/openhab.log <==
2020-12-12 11:17:05.737 [TRACE] [z.internal.handler.LightThingHandler] - Sending {"bri":17,"hue":56401,"sat":231} to light 46 via http://192.168.10.2:80/api/F86D8D32FD/lights/46/state
2020-12-12 11:17:05.750 [TRACE] [nternal.netutils.WebSocketConnection] - Raw data received by websocket: {"e":"changed","id":"46","r":"lights","state":{"alert":null,"bri":17,"colormode":"hs","ct":200,"effect":null,"hue":56401,"on":true,"reachable":true,"sat":231,"xy":[0.3368,0.6262]},"t":"event","uniqueid":"84:2e:14:ff:fe:34:3f:cc-01"}
2020-12-12 11:17:05.755 [TRACE] [z.internal.handler.LightThingHandler] - Result code=200, body=[{"success":{"/lights/46/state/bri":17}},{"success":{"/lights/46/state/hue":56401}},{"success":{"/lights/46/state/sat":231}}]
2020-12-12 11:17:05.764 [TRACE] [z.internal.handler.LightThingHandler] - deconz:extendedcolorlight:homeserver:842e14fffe343fcc01 received LightMessage{hascolor=null, ctmax=null, ctmin=null, type=null, state=LightState{reachable=true, on=true, bri=17, alert='null', colormode='hs', effect='null', hue=56401, sat=231, ct=200, xy=[0.3368, 0.6262], transitiontime=null}, e='changed', r='lights', t='event', id='46', manufacturername='', modelid='', name='', swversion='', ep='', uniqueid='84:2e:14:ff:fe:34:3f:cc-01'}
2020-12-12 11:17:05.770 [DEBUG] [z.internal.handler.LightThingHandler] - val = '231', scaledValue = '91'
==> /var/log/openhab2/events.log <==
2020-12-12 11:17:05.773 [vent.ItemStateChangedEvent] - Light_BaR_Mirror_Color changed from 0.0,100,7 to 309.827576,90.980392,7.000000
==> /var/log/openhab2/openhab.log <==
2020-12-12 11:17:05.777 [DEBUG] [z.internal.handler.LightThingHandler] - val = '17', scaledValue = '7'
==> /var/log/openhab2/events.log <==
2020-12-12 11:17:05.829 [vent.ItemStateChangedEvent] - Light_BaR_Mirror_Color changed from 309.827576,90.980392,7.000000 to 309.82467383840697,91,7
==> /var/log/openhab2/openhab.log <==
2020-12-12 11:17:19.906 [TRACE] [nternal.netutils.WebSocketConnection] - Raw data received by websocket: {"e":"changed","id":"46","r":"lights","state":{"alert":null,"bri":17,"colormode":"ct","ct":200,"effect":null,"hue":0,"on":true,"reachable":true,"sat":254,"xy":[0.3368,0.6262]},"t":"event","uniqueid":"84:2e:14:ff:fe:34:3f:cc-01"}
2020-12-12 11:17:19.911 [TRACE] [z.internal.handler.LightThingHandler] - deconz:extendedcolorlight:homeserver:842e14fffe343fcc01 received LightMessage{hascolor=null, ctmax=null, ctmin=null, type=null, state=LightState{reachable=true, on=true, bri=17, alert='null', colormode='ct', effect='null', hue=0, sat=254, ct=200, xy=[0.3368, 0.6262], transitiontime=null}, e='changed', r='lights', t='event', id='46', manufacturername='', modelid='', name='', swversion='', ep='', uniqueid='84:2e:14:ff:fe:34:3f:cc-01'}
2020-12-12 11:17:19.916 [DEBUG] [z.internal.handler.LightThingHandler] - val = '254', scaledValue = '100'
2020-12-12 11:17:19.921 [DEBUG] [z.internal.handler.LightThingHandler] - val = '17', scaledValue = '7'
==> /var/log/openhab2/events.log <==
2020-12-12 11:17:19.950 [vent.ItemStateChangedEvent] - Light_BaR_Mirror_Color changed from 309.82467383840697,91,7 to 0.0,100,7