here are my .items, I don’t use .things file for Hue Bridge.
Switch Tint_Light1_Toggle "Licht Schlafzimmer An/Aus" <light> (GF_Bed, Lights) [ "Lighting" ] {channel="hue:0210:001788XXXXXX:16:color"}
Dimmer Tint_Light1_Dimmer "Licht Schlafzimmer Dimmer" (GF_Bed) [ "Lighting" ] {channel="hue:0210:001788XXXXXX:16:color"}
Color Tint_Light1_Color "Licht Schlafzimmer Farbe" <light> (GF_Bed) [ "Lighting" ] {channel="hue:0210:001788XXXXXX:16:color"}
Dimmer Tint_Light1_Color_Temp "Licht Schlafzimmer Farbtemp" (GF_Bed) [ "Lighting" ] {channel="hue:0210:001788XXXXXX:16:color_temperature"}
Switch Tint_Light2_Toggle "Esszimmer Fenster An/Aus" <light> (GF_Eating, Lights) [ "Lighting" ] {channel="hue:0210:001788XXXXXX:17:color"}
Dimmer Tint_Light2_Dimmer "Esszimmer Fenster Dimmer" (GF_Eating) [ "Lighting" ] {channel="hue:0210:001788XXXXXX:17:color"}
Color Tint_Light2_Color "Esszimmer Fenster Farbe" <light> (GF_Eating) [ "Lighting" ] {channel="hue:0210:001788XXXXXX:17:color"}
Dimmer Tint_Light2_Color_Temp "Esszimmer Fenster Farbtemp" (GF_Eating) [ "Lighting" ] {channel="hue:0210:001788XXXXXX:17:color_temperature"}