I fell in love and if they were mine I would name them Dollop and Mousse or Dollop and Pudding or Dollop and Sweet pea! The White one with spots being dollop because they look like a lil dollop
I think I’d go with themed food names, like Cookies and [name_f]Cocoa[/name_f] 
Otherwise, I feel like they would suit clunky-cute old fashioned human names, like [name_m]Marvin[/name_m] ‘Marv’ and [name_m]Norman[/name_m] ‘Norm’.
Nestley (solid one) and Cadbury (calico one)
I would name thee white one [name_f]Mimi[/name_f] and the darker one [name_f]Coco[/name_f]