This is a Key Tag in the shape of an owl that I made for my niece.

The interesting thing is that I did multiple colour changes (I have a single extruder/head).
I printed with 0.2mm layer height.

I use Octoprint to manage my printer so all I had to do was insert a M0 just before the start of the new colour's first layer. The table below shows when I changed. Note that I don't use a raft so I didn't need to allow for that.

I also have some GCODE scripts in my Octoprint settings which assist in colour changes during a "Pause". Here they are:

After print job is paused:

{% if pause_position.x is not none %}; relative XYZ and ExtrudeG91M83; retract 5 filament, move Z up 5mmG1 Z+5 E-5 F4500 ; back to absolute XYZEM82G90; move to a safe rest position (X100,Y100), adjust as necessaryG1 X100 Y100 {% endif %}

Before print job is resumed:

G1 E5 F4500G1 E5 F4500; absolute EM82; absolute XYZG90; reset EG92 E{{ pause_position.e }}; move back to pause position XYZG1 X{{ pause_position.x }} Y{{ pause_position.y }} Z{{ pause_position.z }} F4500; reset to feed rate before pause if available{% if pause_position.f is not none %}G1 F{{ pause_position.f }}{% endif %}{% endif %}

Hope this was interesting/helpful.

I'm Australian, so "colour" is the correct spelling!