Gray blocks in Minecraft

What's the best thing to use for gray blocks? He's a list of gray colored blocks that could be used in decoration.

Clay
Gray Bed
Gray Carpet
Gray Concrete
Gray Concrete Powder
Gray Glazed Terracotta
Gray Shulker Box
Gray Stained Glass
Gray Stained Glass Pane
Gray Terracotta
Gray Wool


Blocks by Color


Blocks by Material


Blocks by Version