Yep, the interior was overall Interior Green, or sometimes more towards a Bronze Green.
Para seats were either dull bare metal or light greyish silver (the seat pans themselves) with the folding support 'walls' in the interior colour.
The crew seats in the cockpit and radio op/nav position, were covered in a 'bottle' green leather or leatherette material, with the cockpit bulkhead and exposed areas of the cockpit walls and roof behind the switch consoles in a 'sage' green quilted material, not unlike British Cockpit Grey Green.
The control columns were sometimes black, sometimes the Interior Green colour, with the yokes in semi-gloss black. Throttle pedestal black, with the lower section the interior colour.
Here's a pic showing part of the cockpit, which is virtually all original fit, which might help; other internal pics I have are in B&W, but there's not much to see anyway!