Hull Moving Average (HMA) EA Expansion

I am currently using a HMA EA that places orders based on a color change of a HMA indicator (e.g. sell on the second candle after 20 HMA color changes from green to red).

My request is to modify the EA in a way that it works together with a multi time frame HMA indicator (i.e. one slow and one fast HMA). This indicator is already existing. 

The "revised" Hull EA should:

a) only open trades on a color change of the fast HMA, if both HMAs are aligned (i.e. fast moving average changes from red to green; position only to be opened, if slow moving average is also green); 

b) open trades on the 1st or 2nd candle once a former divergence between the HMAs is aligned again (e.g. slow Hull MA turns from red to green, fast HMA is already green, position will be opened). 

Trade management options are not required - they become conducted by another EA.