Should colonies and unaligned countries have cities targeted too and should Africa have targets on it as well?
Not at all, only the Northern Hemisphere was intended to be targeted in OTL Cold War nuclear war plans, seriously, not even Mexico was intended to be nuked, much less anywhere in South America, but again, if you are talking about a Zelda/Adventure Time crossover thing(?), then you can go on and nuke anywhere that you want to without looking for advice, because this whole concept of literally the entire world getting nuked, especially in 1962, just simply does not makes sense (no offense because your map is fantastic and
waaaay better than mine, that I will only be able to post tomorrow!)
Also another important note, since you are talking about the year of 1962 in a Cuban Missile War, then the Soviet Union did not had access to that many nukes, nor ballistic missile technology that would be able to reach and nuke that many places in the US and elsewhere, in 1960 they only had around 1.605 nukes, whereas the United States had a whopping
18.638, the year that the worst nuclear Cold War that could occur is the year of 1985, where the Soviets had 37,000 nukes, and the US had 21,392, with a total of
61,662 nukes worldwide.
For example, neither India, nor Pakistan, nor China had nuclear weapons in 1962, and Israel only had very few rudimentary nuclear weapons (its first deliverable nuclear weapon did not come until around 1966), so you should really focus on doing whatever you want with your ASB crossover timeline, because focusing on real-life plans and stockpiles during the Cuban Missile Crisis would result in your TL becoming extremely anachronistic and nonsensical.
Repeating again, not only was the nuclear delivery technology and stockpile of the year of 1962 not able to nuke these many regions around the world, but even in the late Cold War in the 1980s in the peak of nuclear weapon stockpiles, regions like Latin America, Africa, Oceania, and Southeast Asia were not intended to be nuked at all to begin with as far as publicly-available declassified documents say, but even if certain regions outside of the Northern Hemisphere were indeed secretly planned to be nuked, then NATO, the Warsaw Pact, and China would likely only look to hit army bases, they could not waste nukes by nuking random places when they needed to deal the maximum amount of destruction as possible to incapacitate the nuclear and military capabilities of their rivals, before all of their most-populated cities, army bases, and airports were reduced to rubble.