Check out these neat bases i worked on with a buddy nothing fancy building wise but the idea is to have a capture the flag match on this map. http://img203.imageshack.us/img203/2078/cw14.jpg
is there a bucket in the game, or how did you get the water into the red house? also: what blocks have you used? i like the middle part of the picture, think it is the spawn-zone?
There is a paint tool you can make after defeating the second boss EDIT: NVM I derped a bit when I read your post , though you were wondering how to make the blocks look like that
I added recipes into the game for the blocks for crafting. The water thing i found on accident some item called volcanopod it shoots out a burst of water everytime you use it. Here is a video of my entire home world with the pvp bases in them. Edit- also the blocks i used were titanium plates and the paint tool.