Aura H2O Screen clarity settings

I'm trying to get back the screen clarity of the original settings that Kobo had in place when the H2O shipped.

When I first turned on the device it was so clear and gorgeous looking that I was very impressed at the difference between that screen and my Glo.

But, the spacing was way too wide and from memory font too large, so I changed the settings without taking note of the original settings thinking that the screen would remain clear. No.

Anyway none of my blundering around changing fonts and sizes (whatever) has brought back that original clarity. The screen is sort of greyish and has a mild cloud like background. (That description make sense?)

Here are my current settings:
Kobo Nickel
Font size: about a third of the way along the line - possible 10.5 pt
Weight: maybe 48% ish
Line spacing: zero
Justification: off

Also, does anyone know what the Kobo shipped light setting was?

Thanks :)

Edit
I prefer a sand coloured background rather than a white/bluish coloured background.

Edit 2
I should have also mentioned that I read side loaded epubs exclusively (so no kepubs).