For German desert camo there were used these colours :
1. RLM 78 Hellgrau for lower surfces.
2. RLM 79 Sandgelb for upper surfaces.
3. RLM 80 Olivgrun for mottling on upper surfaces.
Additional colours were
4. RLM 70 SCHWARZGRÜN for propellers.
5. RLM 04 GELB for quick ID elements
6. RLM 21 WEIß for quick ID elements
Look at the page :
RLM Colors