0_Apprentice
I love green, its my favourite colur
1_Wizard
It is a nice color indeed, many rock formations have green in it, the most notable being the emerald.  
0_Apprentice
Is it a primary colour?
1_Wizard
Not, in the subtractive color system. But in the RGB system used for television it is used. 
0_Apprentice
IIs green the most used colour in the world?
1_Wizard
In nature yes, it is because chlorophyll is green and there is a lot of plants and vegetation on earth. 
0_Apprentice
Wow. Do you think the majority of the people in the world prefer green?
1_Wizard
It depends on fashion, in the middles ages green was associated with people working with money like merchants, bankers and the gentry in general.