Red + Yellow = Orange

Orange is a power color... It is one of the healing colors. It is said to increase the craving for food. It also stimulates enthusiasm and creativity. Orange means vitality with endurance. People who like orange are usually thoughtful and sincere. Lady luck's color is Orange.
While red is associated with fiery heat, orange is associated with the benign warmth of the sun. A dynamic color it offers a more thoughtful control than explosive red. Curiosity is a driving characteristic of orange, and with it comes exploration of new things...

Yellow

Yellow is full of creative and intellectual energy...Yellow produces a warming effect, arouses cheerfulness, stimulates mental activity, and generates muscle energy. Yellow is often associated with food. Bright, pure yellow is an attention getter. When overused, yellow may have a disturbing effect. Yellow is seen before other colors when placed against black; this combination is often used to issue a warning. In heraldry, yellow indicates honor and loyalty.