Unless you can prove that any of the things you attribute to colonialism could not have happened without it, which requires you to both make the racist assumption that Africans could not develop without white people and the idiotic assumption that it isn't possible to trade and exchange ideas without subjugating another group - then no, none of those things are 'positive outcomes of colonialism'. They are things that would have happened regardless of colonialism - and in fact likely would have been more widespread.

The single most crucial resource for building computers and smartphones are rare-earth minerals found exclusively in Africa. In a world without colonialism - Africans would therefore be the most likely to actually invent these technologies. And if you think they couldn't invent technology - you are both racist and ignorant since huge technological breakthroughs were made in Africa and exported to Europe for thousands of years before colonialism. The astrolabe for example.