adywan said:

Yeh, some of the shots of R2 are terrible. They are just too blue. If you look very carefully you can see that they added a new layer of colour for his done that doesn't quite match up at times but destroyed all the shading in the process. I may have a way of fixing it though.

To be a little more specific, having looked at the SE version again, I'd say the way the ones just after Luke blasts off from the 'Hoth' planet in his X-wing are fairly nicely and consistently blue coloured/'shaded'. However it's the ones in the later scenes, just before Luke crashlands into the 'Dagobah' planet, and when Luke leaves Yoda and Obi-wan's appearance, that are inconsistent and not as good. These seem a mixture of either too much 'unshaded' blue along with too much black 'shading' still. However, whatever your own preference is, any way you can make the shots a little more uniform will be an improvement.

And agree with doubleofive that it would be nice to see Luke's obviously static, largely revealed X-wing subtley seem to start to 'slip down' or 'across a little' in some way as R2 turns towards it, as it almost fully submerged in the next shot of it which occurs very quickly after.