Like the name, Colorful Tools mod gives players applications to dye your tools in Minecraft. Players do this to difference from the others in a team, or just to make stand out from the others on a server. There are many colors to dye your tools. You can completely mix, change or collect different colors to make your unique product yourself.
Swords like Weapons are not tools you can dye by the Colorful Tools mod, nut their colors are just changed when combining them with a dying agent. If you have ever dyed leather armor, there is no any difficulty at all.