What about mosaic tile? Lots of colors, styles, sizes, and finishes to choose from. You can also mix tiles or keep it simple and uniform - whatever you prefer! This fireplace was done in a single color of iridescent tiles, very sleek and modern! (other colors available!)

I would try the Woodcliff Lake, it has a warmer tone than the lighter greys.

Vinyl is vinyl, and it is never going to look right placed up against real wood floors. Get an inexpensive rug (a flat weave for preference) with some underlay, and throw it down on the floor. Washable would be best, so forget the nice glam photos of oriental rugs in kitchens.

It sounds like you've been through quite the rollercoaster with your building project! That's really frustrating to hear, especially when you had a vision that you were attached to. Construction dilemmas can be a lot to handle, and I can only imagine how the stress might have piled up over time. If you're feeling stressed (and who wouldn't be in a situation like this?), you might want to consider working off some of that tension. Since you're into home design and creating beautiful spaces, you might appreciate the aesthetic and functionality at Hitsona's fitness studio. Sometimes a little self-care and a change of scenery can inspire new ideas for other areas in life, including home design.