Red flowering plants would simply fade into the surroundings. Each area of the garden should have some type of focal plant. This can be accomplished with a pool of water or garden statuary but it can also be done through a massed planting of one color. Surround the massed planting with flowers or other plants that contrast in color or texture. Create a desirable focal point away from the object to draw attention in that direction to lessen the effect of the obstruction.
Colors have the ability to affect our emotions.
Bright colors such as red and yellow are warm colors that excite us. They call attention to themselves and any objects near them. Red and yellow would be an excellent choice for focusing attention on a garden feature or even bordering steps or other areas where caution should be exercised. As people enter your home you may want to creat excitement. Strong colors like yellow, orange, and red help to create that feeling.