When working with yellow/orange and can't find a pair of the same color, your best bet would be using a red cambodian from an extended/bright red line (not cherry red). You will end up with yellow and oranges at least in F2.
Working with yellow/orange dragons is easier. You can pair it to a white platinum, red dragon (preferably the ones with white/silver on the rays), or cambodian (from a red dragon line). They will throw yellow and oranges.
IMO just concentrate on getting the best male possible then hunt for your female .... or vise versa...... if a sibling pair isn't available.