Don't worry about official paint jobs, if you want you can paint them any color you want. If you want to make them another color no one will complain.
My advice on painting this if you have little experience:
1: Prime minatures with a black primer (I use this:
2: Dry brush the whole miniature with a silver metallic paint.
3: Paint the parts you want white and red with a light grey paint
4: Dry-brush white over these grey areas to give them highlights.
5: Paint the red marks
6: Paint other color details.
Do this and you should be fine, models like this have a lot of detail and with dry-brushes and washes they can almost paint themselves. If you keep your paint layers thin you can always come back later and do some more work.