After escaping the green overworld crashes into the nether, and being spawned in a far ways from my nether portal I go to get wood to start building a house in the nether as I was now stranded there... I begin to notice lighting is different. like I had a shaders pack on witch I did not. I would go from everything being bright and easy to see... to everything being darker at random changes of block's I begun=n my hunt for glow stone only to find it is kind of hard to tell the difference between glow stone and lava?! shoomlights are described as bright White lights with dark bolded corners. I learn glow stone as a White light with this sunset feel to it just that hint of an orangish yellow tinge to the White. almost completely with no texture. just nearly pure Wight with an unknown glow to it. like a bright, but dim light at the same time?! lava I have gotten to know as an White with a tinge of orange color to it. the look as if a strange distorted version of soul sand with haunting faces glowing a dark glow. 

constantly at random these blocks switch between there normal texture's with a shaders pack feel, and there "new" texture with a more dark nether feel of a texture pack. either way is this a "new" texture's or a major glitch. you tell me. I will try to put picture's, but it is kendo random when the texture's flip. I do have a picture of the "new" lava I will send ASAP

Added photos in order the left is glow stone the center is shroom light, and the right is lava. I have more I may add in time, but here is a glimpse of it. its not just close up V.S. farther away its kind of random I know if I stand here everything will be normal but if I step a few blocks away everything around me will change lighting wise.

I added all picture's of the nether lights of lava, shoomlight's, and glow stone I had gathered so far and from the image you can see there is like 2 textures that randomly switch between for all of these said block's. I may include a short video of the sudden light changes I see all around. IDK if anyone else has this issue, but its one that is kind of scary cuz I cant tell lava from growstone half the time! 

sadly the file's for a video is too big for this upload system, but I created this link for show: 

https://youtu.be/IL5eE-7tgdU

Note: distance is not the final deciding factor.