Cross treks have some funky paint especially if its the pearl ,, I have an orange one. Well are you hoping for some correction or just to shine and seal? if you need some correction use your orange pad,, but I would say for what you have the black is what you need to use.
Make sure to tape off the luggage bars, fender trim and all the black plastic!!!! and cross treks have A LOT of plastic. I'm still trying to get some polish out of some fenders from a year ago.
As a first times please also be aware that not all companies stick to the same pad color scale. Buff and Shine is different from Lack country and not all others follow the same ratings. I do not know where Griots gets their pads so I can not help you there, but black is generally for applying sealants an stuff and red is for wax app and orange is middle correction after yellow being the heaviest. its just the ones in the middle that get a bit muddied up.