This texture pack is far from happy. The textures are quite dark and moody. Now you might think it is in some way bad as those two words are negative but no, not at all. The texture pack do wonders in settings where such a feeling is wanted. Take the Evolix Mansion Map as an example. In that map you want to get that type of moody/dark feeling as it’s supposed to be a little bit scary. So pick a pack based on what the surroundings in Minecraft tell you.