Raimbow Chats

local Players = game:GetService("Players")
local LocalPlayer = Players.LocalPlayer
local ChatFrame = LocalPlayer:WaitForChild("PlayerGui"):WaitForChild("Chat"):WaitForChild("Frame")
local MessageLog = ChatFrame:WaitForChild("ChatChannelParentFrame"):WaitForChild("Frame_MessageLogDisplay").Scroller

local function interpolateColor(t)
    local r = math.sin(t * math.pi * 2) * 0.5 + 0.5
    local g = math.sin((t + 0.33) * math.pi * 2) * 0.5 + 0.5
    local b = math.sin((t + 0.66) * math.pi * 2) * 0.5 + 0.5
    return Color3.fromRGB(r * 255, g * 255, b * 255)
end

local function updateRainbow()
    local time = 0
    while true do
        for _, child in pairs(MessageLog:GetChildren()) do
            if child:IsA("Frame") then
                local textLabel = child:FindFirstChildOfClass("TextLabel")
                if textLabel then
                    local color = interpolateColor(time)
                    textLabel.TextColor3 = color
                end
            end
        end
        time = time + 0.01
        if time > 1 then
            time = 0
        end
        wait(0.1)
    end
end

task.spawn(updateRainbow)

MessageLog.ChildAdded:Connect(function(child)
    task.wait(0.1)
    if child:IsA("Frame") then
        local textLabel = child:FindFirstChildOfClass("TextLabel")
        if textLabel then
            local color = interpolateColor(0)
            textLabel.TextColor3 = color
        end
    end
end)