Minecraft – How to use more than one color in a tellraw command

Holograms or floating text are created by putting a custom name to a invisible armor stand. If you want to have several lines, you can summon different armor stands.

For vanilla servers: http://www.mctoolbox.me/holograms/

For bukkit/spigot servers: http://dev.bukkit.org/bukkit-plugins/holographic-displays/

This is caused by scoreboard team formatting. The display names obtained from the selector will be stylized separately if the target is in a team. Since the formatting options of the display names are being set at their own depth, it overwrites formatting inherited from the parent, being color, bold, italic, underlined, obfuscated, and strikethrough (all defaulting to false without a third-party NBT editor to modify the prefix in the scoreboard.dat file and color is defined by the team option).

As well, insertion, hoverEvent, and clickEvent will be overwritten no matter if the target is in a team or not. However, clickEvent will only be overwritten for player display names and not non-player display names.

You will either have to remove the player from the team before running the command or wait before adding them to the team until after the command runs.