With hundreds of options in back-splash,here are a few questions that are important to get the look you are wanting!
1.) The material you are wanting to use. The most common type of back splashes are natural stone or glass tiles. For a modern look, the glass tile creates a clean look with the straight lines. In a more traditional home you might like a tumbled stone or marble for a timeless look.
2.) The size of the tile. If you are going for a modern design you may see multiple sizes to really make a statement. The mosaic tile is very popular with incorporating multiple colors or making a bold statement. Larger tiles are often seen in traditional and transitional home styles.
3.) Grout does make a difference. Many people think of grout as an afterthought. Grout can make tile stand out or disappear into the mix. Picking a bold color grout can bring out the geometry of the tile. If subtle colors are more your style, grout makes a huge difference in a monochromatic room. However grout can also be closely matched to the tile if you prefer for it to disappear.