My kitchen is at the back of my bungalow and can be dark from late afternoon,I changed the tiles to cream from black and put up a very large mirror to bounce off light from the kitchen window,I also removed the spotlights and fitted a large fluorescent light to the ceiling which made the kitchen so much brighter.
Best idea to keep warm without central heating.
The light coloured worktop saver idea is genius idea Peasblossom I can do that tomorrow!