Information on the UMMOA flag
The flag of the United Micronations Multi-Oceanic Archipelago (UMMOA) was born in a certain historical context.
Originally the flag had a central coat of arms similar to that of the old emblem of the League of Nations [1, 2, 3]. In fact, the flag was like the one below, which was really the original flag the Fifth World Council:
The Fifth World Council came into being on 13 July 2002, but was later permanently closed on 24 February 2008. In its short history, the international organisation has pioneered quite a few things, and some of its offshoots — the Micronational Professional Registry, the Fifth World Accreditation Agency, and Fifth World Health Organisation — later merged to form the organisation known today as Paradiplomatic Affairs (PDA).
Even the old acronym of the Fifth World Council, the 5WC acronym, later served as the basis for the name of the Fifth World Community (5WC), which is today the world's first diaxenospitia, or the UMMOA's largest and globally-scattered village or burgh, made up of the private property of three micronations.
The Fifth World Council has thus served mainly as a Petri dish, a Petri dish for the experiment which has produced an authentic Fifth World  cultural explosion, and as a prototype for the more pragmatic, more successful, less ideological and freer supermicronation called the United Micronations Multi-Oceanic Archipelago (UMMOA), which was founded on 19 January 2008. The UMMOA is in fact both a territorial nation and state, as well as a community of nations and states, so it functions as both a state and an IGO.
Afterwards, only the colours of the stripes of the former Fifth World Council flag were adopted for the flag of the UMMOA:
The artist who made the original Fifth World Council flag, took the idea of the six stripes from the six principle colours of all the flags of the world:
In other words, the UMMOA flag is like all the flags of the world put together in the most simplified way. This is the historical context in which the UMMOA flag was born.
Actually, the UMMOA flag later gave birth to another flag yet, but I will leave out these details for the moment, as this latter project is still evolving as we speak!
Two of the six colours of the UMMOA flag are white (RGB: 255, 255, 255; HEX: #FFFFFF), which is not really a specific colour, but all the three primary colours put together, and black (RGB: 0, 0, 0; HEX: #000000), which is not a colour, but total absence of colour (it is also all the three secondary colours put together).
The other four colours are the primary colours (or additive primaries) of red (RGB: 255, 0, 0; HEX: #FF0000), green (RGB: 0, 255, 0; HEX: #00FF00), and blue (RGB: 0, 0, 255; HEX: #0000FF), and the secondary colour (or subtractive primary) of yellow (RGB: 255, 255, 0; HEX: #FFFF00).
The favourite ratio for the UMMOA flag is the very popular 2:3 (used by 88 of 195 sovereign states). The six colour stripes all have equal discending width on the flag, and follow the colour sequence, from top to bottom of white, red, yellow, green, blue and black.
HMRD Cesidio Tallini [5, 6]