The challenge is called "This and That" - as in "this color" and "that theme"...
And here are the specifics:
Make a card that has a lot of yellow and is meant to cheer someone up.
Kim has put together a great example, check it out:
Those paws in the inside are a wonderful touch!
This card would definitely cheer me up :-)
So add lots of yellow and make a cheery card, and that's the challenge...