When under the influence of a Capri Stim the navigation screen screen is covered with the level of resources on each tile. This can be more than a little distracting.

This userscript hides the text that is shown on each tile (returning your navigation screen to normal). The effects of a Capri Stim are still in effect (reduced cost of trading) and you can obviously turn off the userscript if you want to view the resource levels for some reason.