How to properly use Vector:ToColor()?

[LambadaCorez]

Hello again!
I need to use the class Vector:ToColor(), however, when I use it, it gives this error...
[ERROR] gamemodes/mygamemode/gamemode/init.lua:471: attempt to concatenate a table value
  1. unknown - gamemodes/mygamemode/gamemode/init.lua:471

In init.lua:

print("test for netbool: " .. ply:GetNWVector("color"):ToColor())

This is what I wrote that gives me an error.

However, if I were to add a to string instead of :ToColor(), the vector prints out.

print("test for netbool: " .. tostring(ply:GetNWVector("color")))

test for netbool: 0.562500 0.000000 0.000000, that's it printing out the vector value, which I need converted to a color value.
If anyone could help, it would be greatly appreciated!

[MPan1 banned]

It's because you're trying to join a string to a vector.
print("test for netbool: " .. ply:GetNWVector("color"):ToColor())
This is like doing this:
print("test for netbool: " .. Vector( 1, 2, 3 ))
You can't join a vector to a string. Try this:
print("test for netbool")
print(ply:GetNWVector("color"):ToColor())

[Dr. Inco]

Adding onto MPan1's suggestion, to make it even simpler just use the built-in tostring function:
tostring(var)
It pretty much converts between all variable types, even objects like Vector and Color in your case.
print("test for netbool: "..tostring(ply:GetNWVector("color"):ToColor()))