Ricardo, I am sorry I have had no time to give you the information about the aiguillettes yet. I am still very busy at work. I suggest you try first to read what has already been posted at: http://www.traditia-militara.ro/forum/YaBB.pl?num=1326635092.
In the meantime, I show you images of some different models:
These are parade uniforms of border guards 1934 - 1941. In the first picture you see King Carol II, honorary commander and owner of Regiment 1 Border Guards - a Guard unit. He should have had the specific monogram on the helmet and his aiguillettes should have had one guilt cord and two light green ones, out of the total of three unbraided cords.
The form is very similar to the ones the Gendarmes wore, only these were white (officers silver):
This is how the Royal Guard Battalion aiguillettes looked like - they were not abolished during the war:
They were white and the three cords were braided. This battalion never saw fighting action at the front as a unit, although they had formed an operational one, but most of the members went to the front as voluntaries, requesting to be temporarily transferred to other front-line units.
Next, you can see the aiguillettes of another guard unit: 2nd Guards Flotilla, stationed in Cluj before 1940. They were known to have guilt braided aiguillettes, speckled with light blue, but here you can see one that is light blue speckled with gold (there is also a detail of the so-called "crayons"):
The aiguillettes of the Royal Escort Regiment, renamed Royal Horse Guards, were braided gold, specled with black:
It's interesting to notice that these specific crayons are topped by a royal crown, which means that the owner belonged to the Royal Adjutancy.
There is also the fourragere, braided, that encircled the left shoulder. It was made in the colors of the ribbons of the specific orders that had been awarded to the unit's flag. Here you can see the Michael the Brave (Mihai Viteazul) fourragere, that was dark cherry, speckled with gold. It is on the uniform of a lieutenant of the 1st Mountain Battalion from Sinaia. It seems odd that the crayon has a crown.