The first impact made by a room is colour.
It is a very subjective choice, but certainly choosing a colour that mirrors your ideas is fundamental to make the kitchen the exact copy of your personality. Warm colours like yellow, orange and light brown lighten a room and make it more welcoming and cosy. Colours like grey, black and blue are colder colours... more modern minimal.
Deciding on the colour for your kitchen will allow you to imagine all the details and plan more effectively.