Don't worry. Yellow and orange don't much contrast, especially if you use the Keetongu yellow, but it sounds cool. I only saw one MOC with this scheme, it's probably rarely used, so that's up to you.
Here is my entry.
Name: Takuri
Entry Pic: Here.
Gallery:Here.
Entry Topic: Here.
Sorry, I spelled your name wrong, I forgot this was "ChocolateFrogs" and not "Chocolate Frog".