When I reply, when something comes to my mind also I get a sense of white, black or greyness at my mind.As Tibetians say "When you die, follow the white colour..." Here always follow the white colour.I mean if that thought is in white write it, do it.Every color or shape should have a meaning at you.use it.Here;

White..........Comon wealth, common health, Goodness and long view etc.

Black ..........Means something wrong and bad or closed etc.

Grey ...........I dont use this.White and black mix.

Other colours or shapes........whatever means to you.

And sometimes nothing comes to my mind......this is good for talk

Dont forget a good post make you excited..

Also you can look simply around you and see all these.

This I improved by myself.Dont read or heard from anyone.

ps WARNING!: Dont ponder on this too much.As you may have psychological problems. :)