always cut the red/yellow places. Green is good.

The highlights are 'just' guides. It's not a specific cutting line (which might be challenging to notice) but rather an area where you need to cut the hair to complete the task. Sometimes, you also need to use clippers (it's mentioned in the task; go to the section where the customer's requirements are). If you have other questions, you can contact our developers on our Discord: https://discord.gg/PXekVMYJ.