Heightbar colors are randomized, not based on their PrimaryPart Color?

ive been making heightbar gui, like from tower of hell. and the colors are incorrect. for an example, this blue stage should have blue heightbar, no other colors.

local replicatedStorage = game:GetService("ReplicatedStorage")

local tower = workspace:FindFirstChild("Tower")
if not tower then return end

function createSectionFrames(towerHeight)
    for _, child in pairs(script.Parent.Frame:GetChildren()) do
        if child:IsA("Frame") then
            child:Destroy()
        end
    end

    local reversedSections = {}
    for _ , section in pairs(tower:GetChildren()) do
        table.insert(reversedSections, 1, section)
    end

    for _, section in pairs(reversedSections) do
        local frame = Instance.new("Frame")
        frame.Size = UDim2.new(1, 0, section.Height.Value/towerHeight, 0)
        frame.Name = section.Name
        frame.BorderSizePixel = 0
        frame.BackgroundColor3 = section.PrimaryPart.Color -- this changes the background colour
        frame.Parent = script.Parent.Frame
    end
end

createSectionFrames(tonumber(replicatedStorage.TowerHeight.Value))

replicatedStorage.HeightEvent.OnClientEvent:Connect(function(towerHeight)
    createSectionFrames(tonumber(towerHeight))
end)