Hi ! as a novice to 'Digital Imaging' after getting a new camera for xmas, just wondered if someone could help?

I have 'Paint Shop Pro 7 with Animation 3' of which I am not finding as straight forward, also using Jasc 'Aftershot' stater edition which appears more straight forward.

Could anyone tell how you would remove a certain colour within picture, the picture in ? is someone's shirt which was two-tone so as reflected a colour I would like to remove.

Is there a straight forward way to do this, don't think Jasc 'Starter edition' as this.

Also say adding objects, putting someone's face on a another body.

Would appreciate any help !!

THX !!