Portrait Photoshop onto Blue Background

I need a formal portrait photo to be photoshopped onto a blue background image that currently holds a different portrait. The existing portrait needs to be cropped out and the final image delivered as a JPEG. Importantly, color adjustments need to be made so that the new portrait keeps its original colors but is constant with the blue background.

Ideal Skills and Experience:
- Proficiency in Adobe Photoshop
- Experience with portrait editing
- Ability to match colors seamlessly
- Attention to detail