bc = BrickColor.new("White") -- Change white to the colour you want.
bc2 = BrickColor.new("White") -- Change white to the colour you want.
while true do
    game.StarterGui:SetCore("ChatMakeSystemMessage", {
        Text = "MuppetIsEpic!"; -- Change "MuppetIsEpic!" to the alert you want.
        Font = Enum.Font.Cartoon;
        Color = bc.Color;
        FontSize = Enum.FontSize.Size96
    })
    wait(300)
end
-- This goes in StarterGUI as a local script
-- Message me on disocrd for anymore help Muppet#6931