GREY.
Positive: Psychological neutrality.
Negative: Lack of confidence, dampness, depression, hibernation, lack of energy.
Pure grey is the only colour that has no direct psychological properties. It is, however, quite suppressive. A virtual absence of colour is depressing and when the world turns grey we are instinctively conditioned to draw in and prepare for hibernation. Unless the precise tone is right, grey has a dampening effect on other colours used with it. Heavy use of grey usually indicates a lack of confidence and fear of exposure.
Source: http://www.colour-affects.co.uk/psychological-properties-of-colours
In this picture of a Weeping Angel I see a Weeping Angel in a somewhat gloomy and grey looking containment cell.The Color Grey can be seen in the Weeping Angel and its containment cell. The color grey conveys a sense of neutrality in this picture. This image is attractive to me because it feels very calm and non-aggressive
In this picture of Albert Einstein I see a Albert Einstein in a very calm and collective looking pose .The Color Grey can be seen in Albert Einstein and the picture. The color grey conveys a psychological feeling in this picture. This image is attractive to me because Albert Einstein appears so calm and composed while also looking very intellectual.