The glow is not overwhelming, but just enough to help you notice it in the dark.
At its core, Visible Ores simply highlights and outlines every ore vein that you can find in caves – coal, iron, gold, diamond, and others. You won’t be able to simply see through the blocks at the press of a button – it still requires you to go through all the necessary progression and well-known mining expeditions. Unlike most of the other packs that utilize X-ray and essentially make you feel like you’re cheating, Visible Ores manages to retain the vanilla experience and doesn’t nullify that feeling of success and joy once you encounter diamonds, emeralds, or any other valuable material. The main purpose of the Visible Ores texture pack is to ease that process and eventually make the game even more enjoyable. Every Minecraft player knows that it can be quite tedious to find and even notice some of the rarer ores, especially in the dark caverns that you’re likely going to be mining at.
If you like trying out unique resource packs that bring something new and unusual to the table, then Visible Ores resource pack is one of your possible choices.