Bathroom Floor Tiles Rethink

I've always liked the colour "green" - in fact I could probably say that it's my favourite colour of all. When we first started thinking about floor tiles for the bathrooms, I was happy to go along with our architect's suggestion of a pisatchio green unglazed porcelain floor tile which was similar to one that they had used on a previous project. Our worker's cottage came from humble beginnings so I wanted the bathrooms in the house to pay homage to the fact, and not use any "flashy" tiles and fittings which would look out of place.

Here's what the tiles look like laid:

I like the way the floor tiles have been used as a skirting along the walls, and we are doing the same. However our floor tiles will be laid in a grid pattern instead:

We are also using white glazed ceramic wall tiles laid in a horizontal stretcher bond pattern (some refer to them as subway tiles) which I absolutely adore. There will also be a small section of the original VJ walls in the ensuite.

I recently came across this image (from Real Living Magazine) which got me thinking about about using a charcoal hexagonal tile on the floor instead:

I like these hex tiles - they create a bit of texture and visual interest on the floors. They too are a traditional floor tile so they would work nicely in an old house. Is it better to keep the bathroom relatively neutral and add colour with accessories? Do you think charcoal tiles are "dull"?