Sorry they're not Tamiya colours, these are the Humbrol enamel colours i'm using on my current ROTJ paint up, they may be of some use if you fancy switching brands...
ROTJ no.2 FPH
1. mask helmet leaving dome and lower cheeks
2. liquid mask bright silver on dome and cheeks
3. mist black 33 on dome and cheeks, darker in certain areas as per ref pics
4. seal with satin cote
5. liquid mask misted areas on dome and cheeks
6. spray grey 79 in areas as per ref pics e.g. around certain bright silver damage on dome etc
-GREY NEEDS TO BE A SHADE DARKER!!-
7. liquid mask grey areas
8. spray green 78 x2 coats on dome and cheeks
9. spray green 86x1 mist coat and x1 speckle coat
10. leave to dry at least 24 hrs
11. remove liquid mask and lightly buff with 0000 wire wool
12. mask kill stripes and spray orange 00x 3-4 coats
13. leave to dry 24hrs, remove mask and lightly buff with 000 wire wool
14. lightly mist grey 79 on to dome and cheeks as per ref pics to reduce contrast in certain areas
15. leave to dry for 24 hrs then lightly buff with 0000 wire wool to blend if needed
16. lightly spray black 33 all over helmet to darken as per ref pics also blends the green grey contrast, carefull not to over-do!
17. remove masking tape from upper cheeks, mask lower cheeks liquid mask edge of upper cheeks, mask bright silver damage then mist with black 33 then satin cote.
18. mask misted damage then spray black 33, then mist grey 79 and green 78 very lightly with more green on upper L/H cheek
19. mask entire helmet leaving mandibles and trim
20. liquid mask bright silver damage on mandibles and trim
-LEAVE FINE LINES ON BRIGHT SILVER DAMAGE FOR THE SP PENCIL!!-
21. fine mist spray black 33 on mandible and trim as per ref pics
22. soften black mist with grey 79
23. seal with satin cote
24. mask grey damage
25. spray red 73 on mandible and trim
26. remove all masking, then mask entire helmet except back panels
27. liguid mask bright silver on back panels, then mist grey 79 lightly, liquid mask light grey damage small detail on both back panels, looks like masking tape pulls?
28. fine black 33 mist/shading, do not over do!!
29. 131 and 76 1:1 on back panels
30. 1-2 layers tobrighten the back panels in certain areas with101 green
31. mask back panels, expose key slots, liquid mask silver damage, spray grey 79 very lightly then splatter black 33 also very lightly
32. satin seal entire helmet with 3-4 good coats....
33. alloy L/H ear: dremmel damage, then white primer. Spray silver 11 then satin cote. Liquid mask silver damage. Brown 62 light coats then darken with black 33. Rub with 0000 wire wool as per ref pics going down to silver, white and alloy in places