When planning your border it is a good idea to work with colour combinations; Using a wide palette of colours can create a dramatic effect whereas restricting your choice to two or three colours you can create mood and atmosphere.
Bright reds and oranges ignite passion and in bright sunlight their effects are magnified.
Purple is probably the most versatile and can be used with whites and silvers, or with deep blue. For a regal look it can be mixed with reds or for a cool but lively feel mixed with yellow.
Pale primrose acts as a gentle contrast to strong dark colours but a bright egg yolk shade can be as vibrant as orange
White is the perfect cooler and adds lightness to pastel yellows and pinks.