Highlitng Colours

Can anybody tell me the use of blue color in highliting

It can be done by pressing the alt key while right clicking
There are other colours available as well lol.
You can press the ctrl key while clicking right to get an orange colour.

yes i know but i just wanted to know the purpose for blue as I think I know the purpose of the other colors

Hey, you can use any colours for highlighting 

Then they should remove the these colors and can be only used by staff.

For highlighting squares on the chessboard, you can use any of the available colors just as @Golden_Knight_09 said. There's no defined meaning. It's just highlighting.

You can use many colors . . .

Blue is nice . . .

Red is for Valentine's . . .

i use red for high threat yellow for medium threat and green for safe pieces I just don't use blue

Great

Colour selection doesn't work for me.

lol santoy