[00:46:05] [Server thread/ERROR]: Could not load 'plugins/ColoursList.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.UnsupportedClassVersionError: me/GavlarGaming/ColoursList/ColoursList : Unsupported major.minor version 52.0
	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:135) ~[Spigot18.jar:git-Spigot-c3c767f-33d5de3]
	at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:329) ~[Spigot18.jar:git-Spigot-c3c767f-33d5de3]
	at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:251) [Spigot18.jar:git-Spigot-c3c767f-33d5de3]
	at org.bukkit.craftbukkit.v1_8_R1.CraftServer.loadPlugins(CraftServer.java:291) [Spigot18.jar:git-Spigot-c3c767f-33d5de3]
	at org.bukkit.craftbukkit.v1_8_R1.CraftServer.reload(CraftServer.java:744) [Spigot18.jar:git-Spigot-c3c767f-33d5de3]
	at org.bukkit.Bukkit.reload(Bukkit.java:534) [Spigot18.jar:git-Spigot-c3c767f-33d5de3]
	at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:25) [Spigot18.jar:git-Spigot-c3c767f-33d5de3]
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) [Spigot18.jar:git-Spigot-c3c767f-33d5de3]
	at org.bukkit.craftbukkit.v1_8_R1.CraftServer.dispatchCommand(CraftServer.java:646) [Spigot18.jar:git-Spigot-c3c767f-33d5de3]
	at net.minecraft.server.v1_8_R1.PlayerConnection.handleCommand(PlayerConnection.java:1115) [Spigot18.jar:git-Spigot-c3c767f-33d5de3]
	at net.minecraft.server.v1_8_R1.PlayerConnection.a(PlayerConnection.java:950) [Spigot18.jar:git-Spigot-c3c767f-33d5de3]
	at net.minecraft.server.v1_8_R1.PacketPlayInChat.a(PacketPlayInChat.java:26) [Spigot18.jar:git-Spigot-c3c767f-33d5de3]
	at net.minecraft.server.v1_8_R1.PacketPlayInChat.a(PacketPlayInChat.java:53) [Spigot18.jar:git-Spigot-c3c767f-33d5de3]
	at net.minecraft.server.v1_8_R1.PacketHandleTask.run(SourceFile:13) [Spigot18.jar:git-Spigot-c3c767f-33d5de3]
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.7.0_72]
	at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.7.0_72]
	at net.minecraft.server.v1_8_R1.MinecraftServer.z(MinecraftServer.java:696) [Spigot18.jar:git-Spigot-c3c767f-33d5de3]
	at net.minecraft.server.v1_8_R1.DedicatedServer.z(DedicatedServer.java:316) [Spigot18.jar:git-Spigot-c3c767f-33d5de3]
	at net.minecraft.server.v1_8_R1.MinecraftServer.y(MinecraftServer.java:634) [Spigot18.jar:git-Spigot-c3c767f-33d5de3]
	at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:537) [Spigot18.jar:git-Spigot-c3c767f-33d5de3]
	at java.lang.Thread.run(Unknown Source) [?:1.7.0_72]
Caused by: java.lang.UnsupportedClassVersionError: me/GavlarGaming/ColoursList/ColoursList : Unsupported major.minor version 52.0
	at java.lang.ClassLoader.defineClass1(Native Method) ~[?:1.7.0_72]
	at java.lang.ClassLoader.defineClass(Unknown Source) ~[?:1.7.0_72]
	at java.security.SecureClassLoader.defineClass(Unknown Source) ~[?:1.7.0_72]
	at java.net.URLClassLoader.defineClass(Unknown Source) ~[?:1.7.0_72]
	at java.net.URLClassLoader.access$100(Unknown Source) ~[?:1.7.0_72]
	at java.net.URLClassLoader$1.run(Unknown Source) ~[?:1.7.0_72]
	at java.net.URLClassLoader$1.run(Unknown Source) ~[?:1.7.0_72]
	at java.security.AccessController.doPrivileged(Native Method) ~[?:1.7.0_72]
	at java.net.URLClassLoader.findClass(Unknown Source) ~[?:1.7.0_72]
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:101) ~[Spigot18.jar:git-Spigot-c3c767f-33d5de3]
	at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:86) ~[Spigot18.jar:git-Spigot-c3c767f-33d5de3]
	at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_72]
	at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_72]
	at java.lang.Class.forName0(Native Method) ~[?:1.7.0_72]
	at java.lang.Class.forName(Unknown Source) ~[?:1.7.0_72]
	at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:64) ~[Spigot18.jar:git-Spigot-c3c767f-33d5de3]
	at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:131) ~[Spigot18.jar:git-Spigot-c3c767f-33d5de3]
	... 20 more