Which color and properties you prefer to use for your '0' layer ?

I always prefer to work on default color of "0" Layer which is Color no 7 (white).

I Keep the properties for layer 0 as the default

I rarly change its default color..

white  color is the default color

Agree with Syed Shan Haider. Color Code 7 (White on Black Background & Black on White Background). 

I prefer white color for 0 layer

White color ,

Solid  continuous type of line ,

it doesnt matter. u can take any color.

I also prefer default color. you can change it to any other color if you wish so.

I agree, white is the default color for layer0; I also prefer the default color and agree with the statement that you can use any color for layer0.

I avoid red, since I only use it to mark danger zones

I  PREFER TO USE GREEN COLOR FOR DEFAULT 0 LAYER