Here’s another set of examples for the case, where you don’t have a proper color reference, but you do have production photos, that can serve as a starting point for a color grade.
The first example is the scene in ANH, where Luke first meets R2-D2 and C3-PO:
Target:
Reference:
Color match:
The second example is the scene following the torture of Han Solo in TESB:
Target:
Reference:
Color match:
The final example is our first introduction to Jabba the Hutt in ROTJ:
Target:
Reference:
Color match:
