Distraction-free mode : greyish text

[LeBarde]

Hi there,

I am using Sublime text to write prose in Markdown. I want to have the same behaviour as in iaWriter focus mode :

1. All text but the current line has to be greyed.
2. When scrolling (or using arrows / page-up / page-down), we should see all text normally.

Is this feasible? Thanks by advance!