Henry Ford, in his autobiography, said of his Model-T Ford that "Any customer can have a car painted any colour that he wants so long as it is black". The reason was that the cars were produced on an assembly line, and black had the fastest drying time.
Fortunately for us, the world has progressed significantly since then, and now you can have material in any colour, including black.
In this step in your keepsake quilting process you get to choose the colours, and it is important to choose those you like.
Many years ago, when someone said "people like working with people they like", the whole working environment made a whole lot more sense to me. Well, its the same with your colours. If you like the colours, you won't get tired of them, and you'll be excited to spend as much time as possible working with them. Because you are so comfortable in their presence, this will enable you to express yourself, your thoughts, your mood, your ideas. In the end you'll be proud to be associated with a quilt you can truly call a keepsake.
Where your final creation is for yourself, and since it will tell your story, no colour is wrong. However, if it is for someone else, take the time to consider their preferences at this time. Think about the gifts you've recieved that have made you truly happy. These would be those which suit you entirely. Part of the reason for your joy, is that you know the giver has taken the time to know and acknowledge you, because you are important. So, take the time to know the recipient of your keepsake quilt, and this will help you enjoy each and every colour you use.
Take the time now, to think of your colours. Think about the main colours, find contrasting as well as complimentary colours.