Could someone show me the mod that gets me a coloured main map (like when I pause the game) 

and maybe some installation instructions?

I think I tried one in the past but it never seemed to work.

67 views and not a single reply.  Maybe I dreamt about this mod...hmm

This is the only one I know of.  https://www.gta5-mods.com/misc/satalite-view-map

This may be a bit late but this is the one I use: https://www.gta5-mods.com/misc/colored-map-blips