Dutch colony territories act as Pro-Allied neutrals in that they can be occupied and taken control of during non-Combat Move, except that they are limited to being controlled by the UK (US troops cannot take control of Dutch territories). This doesn’t play much of a role on the Europe side as the only territory is Suriname which is worthless, but it has already been covered in Pacific 1940. Honestly I’m a little surprised they didn’t make a similar rule for Brazil in that only the US can occupy and control Brazil.
French territories will act just like territories of other powers when their capital has been taken: allied occupying forces do not take control and do not collect IPCs unless they recapture it from enemy control while the capital is still in enemy hands. This means that in order for the Allies to gain control of these territories and earn IPCs from them they would have to let Italy, Japan, or Germany capture them first, then recapture them from the Axis power. Otherwise they remain French territories and no one gets the IPCs until Paris is liberated.