Both aircraft were painted aluminum and coal black (Humbrol Nos. 56 and 85).
The frames around the front compartment were painted wood.
The interior of the planes were painted as per instruction sheet.
Unless one makes his/her own stencils to match the exact letter sizes and shapes, the lettering could be closely matched by using Letraset (very expensive!) or Geotype instant lettering.
For the wing, one can use:
Helvetica Medium Condensed #3116 (19.3 mm), or
Helvetica Light Condensed (less suitable), or
Helvetica Medium, or
Geotype Helvetica Medium 304-72 CN pt (19 mm).
I used none of them. Because of the corrugated surfaces, I experimented with Geosign Stick On Letters (19 mm).
The wings were air brushed with colours in reverse order (ie. the underside of the wings were painted white and the upper side in black).
The registration letters were stuck on and the right colours were applied.
Remember the surface is corrugated! Make sure that the paint is not too thin or it will flow under the letters. After the paint dried, the letters were pulled off. It worked like a charm!
On the sides, having no other options, Letraset Helvetica Light Condensed #3114 (7.9 mm) was used.
NOTE: the letter style and shape is somewhat different between the 'medium' and 'light' variants.
Photo of the real aircraft for comparison.
Letraset #1571 was used for the name "CITY OF PRINCE GEORGE". Because this letter size was still too large, the logo was reduced to size and printed onto a clear decal film base using a photocopier, then applied to the model the usual way.
The lettering on the tail was done by hand on a clear decal base.