https://en.wikipedia.org/wiki/Rhodesian_general_election,_1970

Does this sound like a non colonial system?

The electoral system was divided into three different classes of seat:

European roll seats: 50 seats were returned by voters of European descent.

African roll seats: 8 seats were returned by voters of African descent.

Tribal seats: 8 seats were returned by Tribal electoral colleges made up of the Chiefs of the Tribes

To qualify for the European voters roll, a voter had to be European, Coloured, or Asian and either:

Have received an income of not less than $1,800 per annum for the previous two years, or

Own immovable property worth $3,600; or

Having completed four years' secondary education of a prescribed standard, have an income of not less than $1,200 per annum for the previous two years, or

Having completed four years' secondary education of a prescribed standard, own immovable property worth $2,400.

To qualify for the African voters roll, a voter had to be African and either:

Have received an income of not less than $600 per annum for the previous two years, or

Own immovable property worth $1,200; or

Having completed two years' secondary education of a prescribed standard, have an income of not less than $400 per annum for the previous two years, or

Having completed two years' secondary education of a prescribed standard, own immovable property worth $800.

In practice very few Africans qualified, and many who met the qualification requirements refused to register to vote.