Here is a useful tool to help you visualize what a room can look like by using different types of flooring and a choice of colour on the walls.
It covers a range of colours although it doesn't have every single shade or tone as there are simply hundreds of thousands to choose from, and this was designed to make the process easier, not harder. Once you have the general colour scheme, a master painter can help you finalize your colours in more subtle graduations, or you could try our other Wall Colour Chooser.
The colours in the left group change all three walls while the colours to the right make a feature wall.
Below that you have some buttons for different types of flooring (You can see I must have been hungry when I made this) and further down you have some buttons with preset examples.