Love your fabrics. The triangle pattern quilt is fine with no sashing, as is the block quilt shown. However, IMHO if you just want to use a border or wish to add size to your quilt by doing so . . . I would use some shade of gray . . . but definitely not white NOR black. IMHO both these would overwhelm the softness of the color palette you have chosen. Your eye will tell you (or if it made you feel more confident another quilter with a "good" eye) what shade of gray would look nice. Whatever you choose, I'm pretty sure it will be very pretty. Hope we get to see the finished product
