I can't understand why when I enter the render armor color 00FF00 - 00FF03 (I don't have it used anywhere on any other armor), classic minecraft can't somehow display that texture from the texture pack. For most computers it worked for these values as well. Could it be the integrated graphics from intel? Because I found that some features from some shaders are either displaying wrong or it throws an error and the pack won't load because of my Intel HD Graphic 4000.
When I have optifine so armor is displayed just fine.