Floors?

I have so much to catch up on it is RIDICULOUS!!

I have yet to even show pics of the new digs. BUT before I get in the back log, I have to make a decision on the bathroom floors ASAP. They are horrid. The laminate is stained, and there is carpet and laminate in the 'Master' bath area, very mullet esque. Before I start- every wall in our house is this horrible yellow/beige/tan. Our neighbors confirmed it- in the late 2000s our house was a rental and thus, our walls are as bland as bland to be. Painting and colors to come soon, but before then-- bathroom floors!!

Here's the Hall bath with the 1980s acrylic sink area and bath/shower surround which is pink/tan:

Can you see the yellow stains in the picture above? 

The wall colors will be a blue to contrast with the acrylic - and of course I can't find my inspiration image for you. But trust me- it's good. 

Here's what we are thinking for the floors, white hexagon 'penny' tile:

Good? 

Question 1: Black or dark gray grout??

Here's the Master with the carpet in the front and laminate in the back: 

We have confirmation that the tile in the Master is the original 1960s tile. Bad news we can't afford to do anything to the bathrooms at this point beyond floors, paint and hardware. For the floors, we plan to change this whole area to tile- it is about 20 square feet.

Here's a closer look at the somewhat awful tile that I am learning to come to terms with:

Good news- the tile in the master is tan with specs of Gray, sooo my goal is to go with a gray paint with blue undertones rather than the blah yellow/tan.

So here's Question #2.

In the master: do we go big with carerra marble hexagon tiles (at twice the cost):

Or just go with the white hexagon penny tile with gray grout:

Since it is such a small area- I kinda want to splurge. What do you think? I know it's hard without paint colors.

Let me know!! More pics coming soon.