Reply to Ordering a MidiFighter - What button colours to choose?

Hi, I'm seriously considering ordering a Midi Fighter but am confused as to what colours i should choose for the layout. i know this obviously a personal choice, but looking at the 2 vids for the mappings released by Ean, having a mix of different colours for key buttons seems like a good idea (for ex. red to activate sample mode). Can anybody suggest how many different colours should be used in order to make best use of the available mappings? Other than the mappings I mainly want to use it for dropping hot cues (4 for 2 decks) so that would leave 8 buttons that would need different colours for other functions (i'd appreciate some suggestions for this as well!).
Thanks!