Hi Nathan,
Thanks a lot for the links & samples. The designs you suggest do indeed look like a step into the right direction!
At first blush, they do look like a nice solution to the problem, as they bring the identifying character of the shape of the icons back to the fore again — and I like that you’ve managed to do that without losing the new colour-coded-background feature.
Even so, the icons themselves are more a kind of line drawing than typical icon symbols and they are in that regard similar to Rafael's initial design. Such line drawings are quite sparse and less readily identifiable than a full image that also contains the representation of surfaces. The difference is the same as between a drawing and a painting …
In that way, I would give the designs provided by Dominique the edge, as they have the advantage of being solid; I understand that you tried to stay close to Rafael’s version, confining yourself to one single colour for each icon, but at least gave them variety by giving them different colours— which is a huge improvement over Rafael’s original suggestion. I wonder, though, if your activity icons could be developed further by making them more solid, i.e. adding some filled areas?
Or could
these very basic designs Dominique provided do the trick, if you were to stick them into your delicate-shade colour backgrounds?
I personally like your idea of giving the background a round shape. Even so, you might also make it e.g. square-shape with rounded edges, provided that it does not appear to be the actual icon/shape itself but really stays in the “background”, which would be the case due to the blotting paper effect — a very nice idea too, I find.
In my opinion, this is actually the most important improvement in you design: keeping the background in the background while still retaining the colour-coding idea.
Thanks again for all the hard work you've put into this!