Naming a block in singleplayer anything with a hashtag (#) will cause the block to be pitch black, when i download a server map that has custom blocks with a hashtag in its name, the block has a like color overlay, how do i achieve this in singleplayer

Normally you would edit the block's fog color which also changes the block color when the block has the # symbol in its name. However, the blockedit command doesn't have a way to change a block's fog color.

Workarounds

As suggested by issue ClassiCube/ClassiCube/#1077, the /client blockedit command might be unfinished and doesn't support editing every block property such as fog color. We can use workarounds to change a block's fog color.

For the example, I will be changing stone's color to red. Prepare by changing a stone's name to include the # symbol in the start of its name /blockedit 1 name #Stone.

Level NBT editing

When levels are saved locally, they are saved in the ClassicWorld format which is structured by NBT. You can use a NBT editor such as NBTExplorer.

Assuming stone's name has already been changed to #Stone via /blockedit 1 name #Stone. Save the level and open the level in the editor (I like dragging it in). You will then see a tree of the level structure. Expand Metadata > CPE > BlockDefinitions and then you'll see Block0001, this is the block we renamed.

There will be a field named Fog which includes settings related to block fog, including color. Double click it to open up its editor. It is a byte array which contains four bytes (the clusters of two characters). The first byte (likely FF) is irrelevant as it doesn't describe color. The last three bytes are the fog color in RGB format. I want the block to be red-like apple, so I will override the last three bytes with FF 00 00. Click OK on the hex edtior's window to apply changes and save the edited file.

The level's stone is now red.

MCGalaxy

You could use a server which gives you the ability to change fog color of blocks, such as MCGalaxy. To change the current level's stone's color to red in MCGalaxy (assuming default block set), you would use /lb edit 1 name #Stone and /lb edit 1 fogcolor ff0000. You could then save the level locally and use the new block set as you will.

Edited 13 hours ago13 hr by BunnyNabbit

Thanks for your explanation and the time you put in typing, this will help me alot. i hope the classicube creators will add the remaining Blockedit properties, because they can

Edited 5 hours ago5 hr by PixelGamer2