Photo editing

I have a new website Theme, which Id like to keep as original looking as possible.

But, I need to add eight new large photos to the website home page main image. Unfortunately, when I do this, because of their bright colours, they change the whole look and feel of the original website colour theme. I need someone skilled with photo editing and colour scheme matching to make my new images match the website more suitably.

Attached is a link to the original home page (with nice colour scheme), and attached are 3 images that I want to use in place of original images. These images are to be placed in the large main image position at top of page (Beautiful Spaces). Total of 8 images i need edited.

Please explain what you can do to make my new images look more suitable for website theme?

https://xplorebuziness.com/pete/