I have a two scripts, one is a localscript, the other is not. The variable _G.Colour is currently a string of 255, 0, 0. When I try and alter the colour, using the code: (nothing is wrong with the code, trust me)
TextLabel.TextColor3 = ChatColour.Name
It returns the error bad argument #3 to 'TextColor3' (Color3 expected, got string)
_G values are not to be used between server-client. Your best bet is to make a Color3Value in ReplicatedStorage. You can insert this from the explorer.
But if the color is going to be different for each player, you should use a Remote Event.
Your actual code is wrong because TextColor3 requires a Color3 object, not a string; I think the error is clear. Some things like Enum can simply use strings. Not this.
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5 comments
http://wiki.roblox.com/index.php?title=API:Color3
It must be a color3 value, not a string
How to I create a Color3 Global Variable?
why do you need it to be global
So that I can access it from a LocalScript, basically the server chooses a colour for the player (in a script) and the localscript turns a text label that colour.