FOSS gamedev and creative worlds

soo, im using a texture pack where the sand is really bright and i cant see the font. this made me want to change the font but i cant figure out how to do it correctly, can someone help?

Try this: https://forum.minetest.net/viewtopic.php?id=4436

I made up those fonts for exactly the situation you describe.

k the part i dont get tho is the installation, i have two files, one called minetest.conf(as the name) and minetest (a CONF file) where do i put the code and other stuff? doesn't take much to confuse me :P