With black and white tiles you don't have to use black or white grout, you can choose a dark gray that will have less issues with dirt and staining. Also, depending on the style of your home, you could consider some natural stone. I don't have a picture, but I used Ostrich Gray Slate/Quartzite in my entry and I love it. It's a natural stone with a lot of pattern in gray/charcoal/black and it's honed smooth. The dark gray grout never looks dirty. (I have the same tile and grout in my mud room/laundry room too.)

here is the proposed exterior. We don't love the big blank wall in the front to the right of the window. Also, it seems like a lot of zig zags across the roof line.

Love the mid-century vibe! The 2 things that stand out immediately are the scale of the outdoor wall sconce and the horizontal glass design on both doors. 1. The design on the doors breaks the lines of the doors which can really be the star of the entry. I think one vertical glass design on one door(preferably the glass on the right door) or both would give it a grander look. Or doing the similar idea with the 3 glass design but vertical. 2. Then about the wall sconce. maybe with the glass on the door the sconce would work. But feels a little high to me. I would drop it a little lower. I think If you had the right door with only the vertical glass it would give symmetry with the 1 sconce. And I don't know if their is room to include a J box in the overhang to hang an outdoor semi mount or pendant. In addition, it appears that foyer stands is not in sight lines of seeing into the living quarters. If that is the case I would not do any window treatments. Or if you are uncomfortable with not having something there then I would do roller shades. Roller shades give a great modern look and do not interfere with views. Lastly, I would add a nice XL black pot with a nice Japanese species that won't block too much of that window

sorry for my terrible picture just trying to explain what i mean... we have a drafting company doing the design for us, but we still need to make a decision on if we want the dormer window to be open to the entrance and find it hard to visualize how/if it would work