I found some photos of the 2 Mustangs at TNI-AU HQ on an Indonesian website and I'm reposting them here for the guys interested in the Indo Mustangs . Note these photos were taken in 2000.
They are actually in better shape now than in these photos so they must have repainted them in the interim period.
There were a couple of Dutch guys photographing everything at airports from 2000 to 2006 and some semi public airbases and it really made the military here furious
It would be impossible as a foreigner now to get out of your car and take these sort of photos now (HQ also requires a security clearance). As of 1 December 2009 you CANNOT go airside on any of the joint civil military airports without an air force security clearance , no exceptions unless you are foreign aircrew going to your aircraft and then you are escorted so these sorts of photos will become even rarer in the future.
A New Zealand engineer friend of mine wanted to photograph the P-51 at the base entrance of Halim AFB which is in a public area and I told him not to do it as it would land me in trouble, he then wound the window down and started to get his camera ready when I said 'no, I'm serious' . An hour later we met the Lt Col in charge of base security on a project we were doing and when my friend asked for permission to take a photo of the P-51 he was told 'no' also. The Indonesians have always been sensitive about serial numbers , dash numbers etc (particularly active aircraft) being recorded and given the explosion of the internet they are cracking down again.
Anyway enjoy these photos

