Photoshop: WebSite Photos Optimization (6 hi-res images)

Hello! Thanks for checking out my little project. Here it comes: I have a small, experimental website. It's mostly visual, with six hi-res images in the background, with some text laid over, and transitions. Those images are selfies taken with a GoPro camera; the wide angle gives them an "adventurous" feel. I like that idea, and how it turns out in this "prototype". However, the images were taken in very different lighting conditions (indoors vs. outside, day vs. nighttime). I would like someone with Photoshop skills to take a look and retouch them so that - they become more "similar looking" as you flip through the site - they distract less from the text in the foreground When I say "retouch", I really just mean 1. smoothening the colors across the six images for a more uniform look and feel of the site. 2. toning the colors down a bit so the images are less of a distraction from the texts in the foreground. The pictures itself are okay, so please no cropping or other editing. Please take a look at the site and tell me what you think can/should be done. [login to view URL] If we come to terms, here's how we could go on: 1. You present me a choice of three or four sets of images (first payment milestone), e.g. with different "color schemes" (light/bright, blue-ish cast, ...) and other optimizations (sharpening/softening, ...) to make the site look more "uniform". 2. I will test / try out those alternatives for their overall impression. 3. I choose the final design variant and you work through another iteration (second and final payment milestone). Thanks again! Look forward to hearing from you. -Jochen