So I have a younger cousin who's been hanging out with a group of other teens recently. Unfortunately, my cousin is at the stage where they don't want to talk about their friends to their parents, so my aunt is freaking out that the group's all into drugs, or gang wars, or drug-fueled gang wars. I think they just sit around and play video games. Whatever.
Anyway, my aunt rooted through my cousin's room and found this note from one of their friends (named Nester or something like that). She's convinced that it's a map of houses the group is gonna rob or something. I'm fairly sure it's a message of some sort, but my aunt won't stop fretting unless I can tell her what's going on and what the message says.
So, can you find the way to interpret this grid and save my cousin from a preemptive grounding?
For color-blind puzzlers...
45 27 313 111 are purple
33 22 44 11 are cyan
23 12 35 46 are yellow
34 42 17 210 are green
29 31 410 18 are orange
49 13 21 36 are pink
314 24 14 43 are blue
48 32 15 26 are red
There's a good amount of extra space in the picture--that's on purpose.
Every number is different for aesthetic purposes--there easily could have been repeated numbers.
The source of the grid is hinted at a couple of times in the setup, one hint more obscure than the other.
If I had made this puzzle before the end of June, the grid would look different, and had I made it last year, different still.
El-Guest's picture is accurate and useful, but this picture might be more useful...