Help w/ Kitchen Paint...Couldn't get picture of Tile on message, sorry

Marion Lathamon Monday

I am redoing kitchen...am using Riyadh Jade Porcelean Tile looks just like onyx in real life.but other pattern is browns/taupes...kitchen is 12x12 two counters..one has sink/window overhead and bottom cabinets and the other counter has lower no upper. they are L shaped...am afraid tile might overpower,,,want to use glass subway tile color of onyx not the darker veins and then paint walls....paint bottom cabinets 1/2 shades darker than upper cabinets...don't know about floor either. so need help with paint colors/ floor and any ideas on backsplashes