Hi. Had you intended to upload pics? How much light do the rooms get and which way do they face?Farrow and ball or little Greene do a lovely range of neutrals but it would be helpful to know which way the rooms face. In terms of making it bigger, light and neutrals colours can help (cool colours make walls recede). Paintwise you could use the same colour on walls, floor and ceiling in different shades.Mirrors will give the appearance of a bigger room as will furniture on feet or a glass coffee table so you can see the floor. Either small pieces of furniture or a just a few larger pieces. Also pull furniture away from the walls or maybe have something at an angle. If you have a rug go for something that is similar in colour to the floor otherwise it breaks up the floor. For the evening try a few lights so you don't just have a central pendant light. It would be good to see pics though so people could make specific suggestions for your rooms