SCP Foundation

The whole part of different thmes and people adding to the making of new paintings sounds great to me.
The paintings cannot be scrubed in the original painting parts since doing so would cause the mural painting to re-locate somewhere else always public.
Now I'm thinking of the people that are worthy, that they are added to the painting as parts of the designe making it better than it was before…and that in someway, discovered through experimentation, the pieces can be scrubbed off…the form and colour they are can be taken out as a 3D object which will have different consistency depending on the form it was. Many interesting experimentes could be done as you said Tom

Since the oirignal idea for the Entity is that it considers this paintings as "gifts", what if those who are Unworthy…were turned into a zombie-like state of numbness? and will try to walk to the closest "paint bucket"? This would be a hidden hole somewhere close to the mural into which the Unworthy will submerge to be "useful at something", and be consumed by the liquid. If you take a spoon of the liquid it will gain a radom colour upon leaving the original liquid mass, because this is the "paint" the entity uses to create the inicial mural.

Edit: Oh….the response appeared on top? Okay, sorry.

Different murals could have different themes, like vice, virtue, love, hate and when a human enter a specific mural, it could represent his personal aspect.

This could be a good track to work with. Might also lead into more of a reason behind the murals capturing people. Maybe the artist is seeking their ideal partner? The murals capture talented people who perfectly exemplify virtues, and if they're found "worthy", they join the artist in spreading the murals around? If they're deemed "unworthy", they're stuck in the murals so the artist doesn't have any competition for the mural space?

Completing murals could also cause anomalies to appear elsewhere, related to the mural.

I'm not too sure about this, since I feel like the article would be better presented if the focus was on the murals.

You could also tie it with the group of interest Are we cool yet? That kind of thing is their style.

As a note since I saw the original draft, the author has their own character they'd like to relate the anomaly to. Also, there are more anartists out there than just AWCY?, so there's no need to namedrop if the author is disinclined.