Hue Lights don't display color correctly in the UI

[omriasta]

Home Assistant release with the issue:

0.68 beta with fix from #13944

Last working Home Assistant release (if known):
0.66

Operating environment (Hass.io/Docker/Windows/etc.):

rasbian virtual python env
Component/platform:

hue.py

Description of problem:

Lights display Green in UI for some light groups although the bulbs themselves are set without color

Problem-relevant configuration.yaml entries and (fill out even if it seems unimportant):

Traceback (if applicable):

Additional information:

@amelchio Following up from #13944
I am displaying the info for 3 rooms, the differences between them are:
Living Room: All 3rd gen color bulbs
Kitchen: Several white ambiance bulbs and 2 3rd gen hue color spotlights
Master: Several hue white ambiance and 2 2nd gen hue color bulbs
All 3 are set using the "Bright" scene from hue and you can see the xy is almost identical between all 3 in the hue API debug. The Master (room/group) always displayed correctly in HA, the Living room displayed green before the patch from #13944 but now displays correctly with the patch.
And finally the Kitchen is displaying green before/after the patch and since update to 0.66 I believe.

Here is the relevant info from hue debug for Kitchen:

"name": "Kitchen",
"lights": [
"25",
"24",
"23",
"20",
"21",
"19",
"16",
"17"
],
"type": "Room",
"state": {
"all_on": true,
"any_on": true
},
"recycle": false,
"class": "Kitchen",
"action": {
"on": true,
"bri": 254,
"hue": 14957,
"sat": 141,
"effect": "none",
"xy": [
0.4576,
0.4099
],
"ct": 366,
"alert": "none",
"colormode": "hs"
}
}
},

And Hue Attrib for Kitchen:

{
"min_mireds": 153,
"max_mireds": 500,
"brightness": 254,
"hs_color": [
82.163,
55.294
],
"effect_list": [
"colorloop",
"random"
],
"rgb_color": [
202,
255,
113
],
"xy_color": [
0.347,
0.511
],
"is_hue_group": true,
"friendly_name": "Kitchen",
"supported_features": 63
}

And now a different room/group which displays correctly:
Hue debug API for Living Room:

"name": "Living room",
"lights": [
"1",
"2",
"3"
],
"type": "Room",
"state": {
"all_on": true,
"any_on": true
},
"recycle": false,
"class": "Living room",
"action": {
"on": true,
"bri": 254,
"hue": 14957,
"sat": 141,
"effect": "none",
"xy": [
0.4576,
0.4099
],
"ct": 366,
"alert": "none",
"colormode": "xy"
}
},

And Atrribs in HA from Living Room:

{
"min_mireds": 153,
"max_mireds": 500,
"brightness": 254,
"hs_color": [
38.222,
52.941
],
"effect_list": [
"colorloop",
"random"
],
"rgb_color": [
255,
205,
120
],
"xy_color": [
0.459,
0.408
],
"is_hue_group": true,
"friendly_name": "Living room",
"supported_features": 63
}

And lastly a room that has only 2nd gen color bulbs:
Hue Debug API for Master Bedroom:

"name": "Master",
"lights": [
"7",
"8",
"5",
"6"
],
"type": "Room",
"state": {
"all_on": true,
"any_on": true
},
"recycle": false,
"class": "Bedroom",
"action": {
"on": true,
"bri": 254,
"hue": 8403,
"sat": 140,
"effect": "none",
"xy": [
0.4575,
0.4099
],
"ct": 366,
"alert": "none",
"colormode": "xy"
}
},

And HA attribs for Master Bedroom:

{
"min_mireds": 153,
"max_mireds": 500,
"brightness": 254,
"hs_color": [
38.667,
52.941
],
"effect_list": [
"colorloop",
"random"
],
"rgb_color": [
255,
207,
120
],
"xy_color": [
0.457,
0.41
],
"is_hue_group": true,
"friendly_name": "Master",
"supported_features": 63
}

[amelchio]

"action": {
    "bri": 254,
    "hue": 14957,
    "sat": 141,
    "xy": [
        0.4576,
        0.4099
    ],
    "colormode": "hs"
}

Not sure what to do here. The colormode is hs and the hue is green so this does in fact look like a green color to me.

[omriasta]

Hmmm...didn't notice that, I wonder why that particular "group/room" is under hs while the rest are all xy? Any idea where one could set the color mode in Hue? Because the Hue app displays the color correctly so it definitely does not see that group as hs....very odd

[omriasta]

OK, So not really a solution but it appears to be a Hue bug. As @amelchio noticed the colormode for the group was on hs on this group only. Even though everything was being set and read as xy in the Hue app. HA would read back the hs setting which were different apparently. I deleted the group and recreated, no luck, still stuck in hs.
Then I tried to remove all the bulbs except for the color bulbs and VOILA! the group colormode changed to xy. Then slowly added back the other bulbs and the colormode stayed in xy. I assume that the "colormode" is set to hs if the first bulb in the group is white. It will not change the colormode unless only color bulbs are in the group. After that changes, it will not switch back to hs even after adding white bulbs. So my guess is that the culprit is this setting in the group. The UI now displays the colors correctly!
As far as a fix, I am not sure if we really need hs color settings or if Hue actually updates those occasionally and not the xy parameters? Maybe forcing HA to always read xy? I'm sure that would probably mess up other things...

[amelchio]

I made a PR (#14154) to always use xy but I guess you are no longer able to test it?