local Workspace = game:GetService("Workspace")

local COLORS = {
    [BrickColor.new("Really red").Number] = true,
    [BrickColor.new("Medium stone grey").Number] = true,
    [BrickColor.new("New Yeller").Number] = true
}

while task.wait(0.01) do
    for _, obj in ipairs(Workspace:GetDescendants()) do
        if obj:IsA("BasePart")
        and obj.Name:lower() == "part"
        and COLORS[obj.BrickColor.Number] then
            obj:Destroy()
        end
    end
end