Richard, is the interior color your mix or does Tamiya have a comparable shade?
The post above ( the one with the picture of the instrument panel ) explains what I did paint wise. While the Vallejo Aotake looked right in terms of color I was unhappy with its high clear base content - it looked out of scale to me so I dusted it over with a highly thinned mix of Tamiya flats. You may want to read through the two links that Hubert nicely provided above regarding your choice of interior color- your type II Otsu certainly fits in the all Aotake interior category as the type II Otsu in the NASM collection with an original unrestored interior is all Aotake .
If you want to use Tamiya paint ( love them myself for spraying) you might first spray XF 16 Flat Aluminum cut with a few drops of Flat White . Cure overnight then dust over with a highly thinned bluish green - easy does it in many LIGHT coats until you achieve what you're after. The idea here is to give a transparent look while minimizing the metallic bit - in 1/48 scale it often looks like metal flake paint on a custom car IMHO .
I used Tamiya XF 8 Flat Blue , XF 26 Deep Green and XF 3 Flat Yellow . Pictures in " Japanese Aircraft Interiors" by Bob Mikesh show the color to be more To the greenish side. Play with the mix till you get what you want .
Hope this helps - Richard