static BlockPalette DefineGray()
{
return new BlockPalette( "Gray", 1 ) {
{RgbColor.FromArgb( 64, 64, 64 ), new[] {Block.Black}},
{RgbColor.FromArgb( 118, 118, 118 ), new[] {Block.Gray}},
{RgbColor.FromArgb( 179, 179, 179 ), new[] {Block.White}},
{RgbColor.FromArgb( 21, 19, 29 ), new[] {Block.Obsidian}}
};
}