The title isnt exactly what I cant do but its close. I want the text to progressively change from red to green over the RGB spectrum. I have tried but at the end it starts glitching and changes colors to light green and the green that I want. My current code is this 

local parts = script.Parent.Parent:WaitForChild("Collectables"):GetChildren()
local red = 255
local green = 0
local blue = 0

for i, v in pairs(parts) do
	if v:IsA("Part") then
		print(v.Name.." IS REGISTERED")
		if v:WaitForChild("ClickDetector") then
			v.ClickDetector.MouseClick:Connect(function()
				print("clicked "..v.Name)
				if v:FindFirstChild("SurfaceGui") then
					v.SurfaceGui.TextLabel.Text = v.SurfaceGui.TextLabel.Text + 1
					if blue < 8 then
						if green < 250 then
							green += 50
						elseif green == 250 then
							green += 5
						elseif green == 255 then
							red -= 50
						elseif red == 0 then
							blue += 1
						end
					end
					local color = Color3.fromRGB(red,green,blue)
					v.SurfaceGui.TextLabel.TextColor3 = color
				end
			end)
		end
	end
end
Anonymous