Sieve and mix all the dry ingredients together..

Add oil and milk to it..

Divide the batter in three portions..

In one part add orange food colour and to other part add green colour leave the third part as such..

Now grease the microwave safe bowl..

Firstly pour orange colour layer then white and then green.. Make 7-8 layers like this..

Microwave it for 6 minutes.. please check in between..

Ur cake is ready.. Cut and serve..