Trail

local TweenService = game:GetService("TweenService")

-- Create a parent part
local part = Instance.new("Part")
part.Material = Enum.Material.SmoothPlastic
part.Size = Vector3.new(4, 1, 2)
part.Position = Vector3.new(0, 5, 0)
part.Anchored = true
part.Parent = workspace

-- Create attachments on part
local attachment0 = Instance.new("Attachment")
attachment0.Name = "Attachment0"
attachment0.Position = Vector3.new(-2, 0, 0)
attachment0.Parent = part
local attachment1 = Instance.new("Attachment")
attachment1.Name = "Attachment1"
attachment1.Position = Vector3.new(2, 0, 0)
attachment1.Parent = part

-- Create a new trail with color gradient
local trail = Instance.new("Trail")
trail.Attachment0 = attachment0
trail.Attachment1 = attachment1
local color1 = Color3.fromRGB(255, 0, 0)
local color2 = Color3.fromRGB(0, 0, 255)
trail.Color = ColorSequence.new(color1, color2)
trail.Parent = part

-- Tween part to display trail
local dir = 15
while true do
	dir *= -1

	local goal = { Position = part.Position + Vector3.new(0, 0, dir) }
	local tweenInfo = TweenInfo.new(3)
	local tween = TweenService:Create(part, tweenInfo, goal)
	tween:Play()

	task.wait(4)
end

local TweenService = game:GetService("TweenService")

-- Create a parent part
local part = Instance.new("Part")
part.Material = Enum.Material.SmoothPlastic
part.Size = Vector3.new(2, 1, 2)
part.Position = Vector3.new(0, 5, 0)
part.Anchored = true
part.Parent = workspace

-- Create attachments on part
local attachment0 = Instance.new("Attachment")
attachment0.Name = "Attachment0"
attachment0.Position = Vector3.new(-1, 0, 0)
attachment0.Parent = part
local attachment1 = Instance.new("Attachment")
attachment1.Name = "Attachment1"
attachment1.Position = Vector3.new(1, 0, 0)
attachment1.Parent = part

-- Create a new trail with color gradient
local trail = Instance.new("Trail")
trail.Attachment0 = attachment0
trail.Attachment1 = attachment1
trail.Texture = "rbxassetid://16178262222"
trail.TextureMode = Enum.TextureMode.Static
trail.TextureLength = 2
trail.Parent = part

-- Tween part to display trail
local dir = 15
while true do
	dir *= -1

	local goal = { Position = part.Position + Vector3.new(0, 0, dir) }
	local tweenInfo = TweenInfo.new(3)
	local tween = TweenService:Create(part, tweenInfo, goal)
	tween:Play()

	task.wait(4)
end