Thanks for the reply... I have seen this before, but I was curious if there was an official one stating the colours... Only as I've seen a supposed S1 ECU but the colours are

Blue Red Blue

Which isn't stated in the list you have supplied it's a bit confusing that's all. There is an ECU on fleabay with the same sticker too

http://m.ebay.co.uk/itm/FORD-ESCORT-RS-TURBO-SERIES-1-ECU-IN-GOOD-WORKING-ORDER-/252291461901