Mars is often referred to as the Red Planet, and it gets its red colour from the iron oxide in its soil. You might choose a red crayon (and possibly orange too) to colour it in...
Mars Colouring Page
Prepare for lift-off by colouring in this fun space rocket, using the key provided. We've got US and UK versions below.
For most of us looking up at the sky, the planet Venus looks a yellowish white colour, but if you were close-up it has a reddish-brown surface - so we'll let you decide which colours you choose to colour in this planet!