These people want others to know they are well educated, whether self taught or otherwise, and strive to attain success through anything mental. Making good leaders, they generally make up their mind in a methodical way. Every detail needs to be analyzed before they make a move.
Any strategic game peaks their interest.
Chess is the game for them. This personality can be a little stubborn. When the color goes more toward a mustard shade, these personalities know that they are the only people making the right decisions. This tends to make others a little suspicious of their motives. The true yellow personality makes wise decisions based on consideration of all points of view.