1.) 12inx12in (approx. 30cmx30cm) 2.) Red/white, Blue/white, Yellow/White, Green/White (four different sheet colours) 3.) Bond paper/copy paper thickness 4.) Kraft Scrapbooking paper. 5.) Intermediate to Complex (looking for dry folded animals/creatures that have a "cuteness" factor for a few elementary students that would make a good use of the paper size)
Frogs always seem to look like they know something that you don't. I find them quite philosophical creatures in some senses, so in some ways i quite respect them. That's why if i fold a complex frog, i'd fold it looking thoughtful. If this post was too strange for anyone, just say.
'No ending is satisfactory. That is because all endings are really beginnins in disguise, seeing how many people they can depress.' -Me. My Neorigami
Do you mean one side is red and one side is white on one square of paper? In that case, try a fox with good colour changes, such as Quyet's fox cub, which is simple and would be easy to fold with 6inches of paper. It can be found in tanteidan 15.