Yes. Go with the same color. It will hardly show anyway. I might still be tempted to add a touch of color or contrast with 2 strips every 3 or 4 feet of the mosaic 1 inch tiles. it just depends on the colors in the room & if you already have enough color w/o adding more.

Flooring tiles can be used on walls, but wall tile cannot be used on floors. Many people choose this option as it takes the anxiety away from having to find a coordinating backsplash. I like the idea of a bit of "mosaic" added in to add interest to the area. But you don't have to.

I found 6 x 16" wall tiles, which worked out to three rows between counters cabinets. Less grout, but still looks "backsplashy".

Large format, rectified tile. Rectified meaning that every tile, box to box will be the same dimension to the T. Non rectified tiles vary slightly tile to tile (very common).
Rectified tiles can be place side by side on walls to delete any grout lines.