This is a 3DBenchy keychain I designed and printed using cura"s stop at layer height feature I quite like the way it turned out hope you do too!

In Cura go to Extensions>Post Proccesing>Modify G-Code>select add a script and hit stop at height the settings for the pause are as follows:
pause at: layer No.
Pause layer:9
Park Print head x: 50
Park print head y:150
Retraction:8
Retraction speed:25
Extrude amount 150mm (this is to purge the new filament so you get the second color instead of a mix of the two)
redo layers:0
Standby temp:0