FILT circuitry colorizer

local filtcolorlookup = {
    [0] = 0xFFFFFFFF, -- set, white
    [1] = 0xFFFF0000, -- AND, red
    [2] = 0xFF00FF00, -- OR, green
    [3] = 0xFFFF7F3F, -- subtract, orange-ish
    [4] = 0xFFFFFF00, -- red shift, yellow
    [5] = 0xFF00FFFF, -- blue shift, cyan
    [7] = 0xFFFF00FF, -- xor, pink
}
for partID in sim.parts() do
    local ptype = sim.partProperty(partID, "type")
    if ptype ~= elem.DEFAULT_PT_DMND then
        sim.partProperty(partID, "dcolour", (ptype == elem.DEFAULT_PT_FILT and filtcolorlookup[sim.partProperty(partID, "tmp")]) or 0xFF3F3F3F)
    end
end