Yeah, Chat Codes, not Cheat codes. I do not know any cheat codes. But chat codes are fun too, and won't get you banned.
Use them like this: Here is [b]Bold[/b] text.
I found these in a forum post, and have not confirmed that they all work. Here is the post.
- White: [ffffff]
- Red: [ff0000]
- Magenta: [ff00ff]
- Cyan: [00ffff]
- Green: [00ff00]
- Blue: [0000ff]
- Yellow: [ff0000]
- Black: [000000]
- Bold: [b]
- Italic: [i]
- Underline: [u]
- Strikethrough: [s]
- Superscript: [sup]
- Subscript: [sub]
- Cider: [fruit]
- Diamond: [diamond]
- Metal: [metal]
- Leather: [leather]
- Fur: [fur]
- Tea: [tea]
- Timber: [timber]
- Cheese: [cheese]
- Salt: [salt]
- Scrolls: [scrolls]
- Silk: [silk]
- Porcelain: [porcelain]
- Marble: [marble]
- Crown: [crown]
- Explosion: [boom]
- Citizen: [work]
- Clock: [time]
- Blue Star: [xp]
- Treasure Chest: [chest]
- Oil Barrel: [oil]
- Food: [food]
- Gold: [coin]
- Shield: [shield]
You can get pretty much any color you like by playing with the color values. Each of the six characters is a hexidecimal value (0-f). For example, [ffa500] is orange. Here is a site for playing with color values