Kenyan here. The possibility of that is low seeing as how whites in Kenya number 67,000 by the census conducted a decade ago, which is higher that the white population during British Rule. To have an effective minority state, you'd need about 100,000+ during the 50's, so that a pro-white party like the Rhodesian Front could gain a majority so that they could leverage a bid for independence. There was a party shortly before Kenya's independence(forgot the name) that believed whites should be incharge if the country temporarily since most blacks were uneducated and stuff but the KANU party ended up leading us to independence. If this party were to gain the support of a substantive white population, they could then arbitrarily declare independence like what happened in Rhodesia, then lock blacks out of government and establish a minority regime. The remnants of the Land and Freedom Army(Mau Mau) would probably try to destabilize the government, and might get backed up by KANU or another Black Nationalist party like ZAPU and ZANU in Zimbabwe, launching a Bush War in the forests of Central Kenya. However, it would be more difficult for these fighters since unlike ZANLA and ZIPRA, they would be surrounded on all sides. It could develop into a proxy war between East and West. I'm just glad that never happened. Oh, it was also proposed that Nairobi be renamed Coldbrook, which is the English equivalent of the name, which is likely in this alternate TL.