Full color is usually a western comic but with hentai sex ! Indeed, classical hentai do not have colour, except on the first page and the last one ! Then somes details are not seen ! That is why they add colour ! For sure, during an anal sex scene, you want to see details of her butthole and also her pussy by the way ! It make it alive ! Pussyfuck will not be the same without colour ! And you can not see how cute babes are when they give a blowjob in a classical hentai ! That is why you should prefer Full color !
Also you can see the monster tentacle, and in our league of legend category, you could not see champion like Akali, Jinx, Ahri and many more in serious sex action ! Also our famous Cindy Aurum or Cidney Aurum is in full color ! That is much better to see which tool she put in her pussy and if she finger her ass with their gloves or not !