Nice looking skinks!
Did you find that yours got darker or lighter over time (as they aged) or could you pretty much tell what they would like like from when they were little?
Here's the adds I'm looking at. I've contacted the seller for some additional info on these. After looking at more pics, I think the Merauke's appeal to me more than the IJs (more contrast maybe?).
#1
#3
I really like the patterning (on the side / throat) and overall light tones on number 3, but I love the pink / orange on the throat of #1, I'm just not sure if either will get darker as they age or gain more color. I've asked the seller about their temperaments and background.