Found this info for one supplierand 5 band colour coding
Markings are to be shown on the resistor body by color coding.1st, 2nd and 3rd color codes : nominal resistance value. 4th color code: resistance tolerance-J (±5%) - gold color. 5 th color code : fusing characteristics green color -8 times blue color -12 times white color -16 times violet color -32 times
if 1W then white band means subjecting to 16W will fuse in 1 minute
Surely any normal 1W resistor subjected to that sort of overload will have burnt up quicker than in 1 minute or have I misread something ?
-- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on