How fortunate to have such close friends. I would go ahead and make a quilt that you liked and if they don't move you can keep it and enjoy it or give it to them for another occasion. I also hate to make quilts that people ask for in certain colors that I don't enjoy. I already have 4 requests for family quilts so I doubt if I'll ever have time to make a "just in case" quilt but you are a very good friend to consider doing this.