'Green bands' and the like seem to have been a luxury in WW2 aircraft instrumentation - amongst the major combatants only the USAAF used them with any real regularity. The Luftwaffe, RAF, VVS, etc evidently expected pilots to memorise the numbers. Of course, if you were a VVS (Soviet) pilot, you might have to fly a lend-lease aircraft with Imperial gauges - in a whole new alphabet.