This technique is so easy and so effective - for extreme changes but also for subtle changes to portraits and holiday snaps which don't quite have the impact you hoped - without endless hours of editing and creating multiple layers and masks.
Open the picture with the colour scheme you like into photoshop, let's call it 'art'
Open the picture you want to change, we'll call it 'portrait'
Go to 'image / adjustments / match colour' select the 'art' picture from the spurce drop down menu and fiddle with the settings.
Have a go and have fun!