So while playing i thought of the brilliant idea of creating transparent blocks for mining. It doesn't show blocks that aren't exposed in some way, but it does show underground caves that are unexplored, as well as lava lakes, and mines. Pretty much everything that you would want to see except clusters of ores. Not as cool as I had hoped :(
Here are some screenshots:
The creeper Cyzir is making and the Koffing someone made. I didn't make dyeable wool invisible just because I wanted to be able to see this creeper once it's finished
Some iron in a pitch black cave, now easily identified thanks to my texture pack! This cave that I'm in has no torches, but I can use the light from the sun to see where things are.
Some iron blocks covered by snow. I wonder how long they have just been sitting there without anyone noticing? edit: I just noticed coal underneath. For some reason I decided O would be best for coal. I need to change that.
The night isn't completely unbearable
Pic of redstone
Skeleton rider!
Now I can see into people's houses and hidden stashes
Navigation can be difficult sometimes, so I change the fog to really close, and then it is pretty much as easy as it normally is to navigate