Add more Unmovable blocks in the future

Especially white, black and purple. Glazed terracota for example is not well blending with other blocks and lodestone or jukebox is too expensive. So when i try making compact and visual pleasing redstone machine it turn out ugly outside. For example almost the onewhite unmovable solid block is white glazet terracota which has vibrant blue and yellow pattern. It could be just a couple or more neutral unobstructsble blocks with less visual noise, but it'll make a change