1. Thinned the blue stripe, as per Garry's suggestion (sorry, Garry. I misunderstood 'too deep' for meaning the colour rather than the height).
2. Adjusted the white stripe to match.
I just need to add the engine details and then I think it's finished.

I have saved the textures using DXTBmp as DXT3. Is this OK for an AI aircraft?
Regards
Kevin