The circle app is awesome (make it more readable ?)

do you think a variation of the ring that looks like the attachement is doable

I think we would have to try it out.
Simplest way to test this in one go would be to make a 178x178 pixel PNG image.
Have a look at the Ring README file to see how I built it up.
Then I suggest making one image of 178x178 pixles with the % at 65%
You will have 4 colours to potentiall deal with.
The background - do black first
The primary ring color
The greyed out part of the ring
And now the gaps - the gaps could background or the greyed color.
The colours need to be 3 bit colours only.
The greyed colour can be dithered - but any other dithering on the main ring will look raggy

Once you have such an image I will run it through the image converter and we can have a look at how it looks in practice. I could write some simple instructions / code for you to try out different images.

There is also the image clock that allows you to upload and image.