It should come with a central groundsheet that fits into the porch anyway. Did you want one that stretched into the pod areas so that you had the option of not hanging one? If so, there isn`t one made for the Colorados. You`ll have to make your own from a big tarp. You can also make seperate pieces for these areas from a B&Q tarp, but there are no storm flaps round the bedroom areas, remember, so in very poor weather the wind and rain can drive underneath onto the groundsheet and you can end up with huge puddles.
Just reading this post and was wondering does the colorado let a lot of draft in due to the seperate ground sheet? Also if the rain is beating down and gets under and in does the pod become wet? Only wondering as was basically ready to buy this tent but have read a few posts of bad draft etc.
We've go a Colarado DLX, I use extra tarp for under pods (adapted to make bath-tub style) if fly-sheet is pitched correctly and ground-sheet under-laps fly-sheet all the way round - no probs with drafts (or driving rain or gales for that matter)...
PS: the ground-sheet that comes with the colarado fits full length of tent (600 DLX that is) so you can take back pod out if you want more room and your left with more living area with full length ground-sheet - am I making sense? hope so.......