Colour Temperature setting in routines

Hi, I am new to smartthings and would like to create a routing for sunset to turn on lights at 3500k and another routine to set lights to 6500k. I don’t seem to find an option to set a specific colour temperature while creating routines. Is there a way around this? I am using Philips hue and lifx bulbs.

Thanks very much for the information. I am looking into Core now.