Animal Crossing is infectiously fun. That's why.
Short of taking a screen shot to show others your design, you might be able to do what I've seen others do: use letters that represent colors, such as B=Blue and Y=Yellow, and type out, in a 32x32 format, your design. Take this 4x4 pattern (made up on the spot) as an example:
G=Green; R=Red; W=White
RWWG
WRGW
WGRW
GWWR
With 32x32, it might not fit right in the forum, and it'd probably take some time to do. If you do decide to do that, though, be sure to tell which palette you used.