local Player = game.Players.LocalPlayer
local GUI = Player.PlayerGui

local Chat = GUI:WaitForChild("Chat")

local TagData = {
    Developers = {"luckysupremeeed"},
    DevTag = {
        TextColor = Color3.fromRGB(255,0,0),
        NameColor = Color3.fromRGB(255,100,0),
        Tag = "Developer",
    },
}

function added(Child)
    for , dev in ipairs(TagData.Developers) do
        if Child.TextLabel:FindFirstChild("TextButton") then

        else
            return false
        end
        if dev == string.sub(Child.TextLabel.TextButton.Text,2,string.len(Child.TextLabel.TextButton.Text) - 2) then
            Child.TextLabel.TextButton.Text = "[" .. TagData.DevTag.Tag .. "]" .. Child.TextLabel.TextButton.Text
            Child.TextLabel.TextButton.TextColor3 = TagData.DevTag.NameColor
            Child.TextLabel.TextColor3 = TagData.DevTag.TextColor
            local spaces = ""
            for i=1,(string.len(TagData.DevTag.Tag) * 2) + 8,1 do
                spaces = spaces .. " "
            end
            wait(0.05)
            Child.TextLabel.Text = spaces .. Child.TextLabel.Text
            break
        end
    end
end
Chat.Frame.ChatChannelParentFrame.Frame_MessageLogDisplay.Scroller.ChildAdded:Connect(added)