Happy (belated) Leprechaun Day!

The other night my son said to me "Don't forget - tomorrow is Leprechaun Day! I need to find something green to wear." He was saying this as I was weaving in the loose ends of the GREEN sweater I had just finished knitting for him! Perfect!!! Even though the weather has been very spring-like lately, it is still cool enough to wear a sweater and of course I wanted to test it out on him and see him wearing it right away. I haven't gotten a picture of him wearing it yet, but here is the finished sweater...
The pattern is "children's neckdown pullover" from knitting pure and simple. It was super easy. My gauge was a tiny bit off (18 sts over 4" instead of 16) but I like the fabric at that gauge so i did the 6-8 size figuring that my son is a slim six, it should fit fine. The fit is absolutely perfect. So perfect that I am concerned that he may not be able to wear it in the fall (depending on how much he grows this summer.) I do plan on knitting this pattern again with different yarn. Next time I will do the 8-10 size. My son did complain when he first put it on that it was itchy and asked if it was wool. I lied and said no. It is Plymouth Encore Colorspun which is 25% wool, 75% acrylic. I told him he would get used to it... and he did. When he came home from school, he was still wearing it and didn't want to take it off.

I will not be using this particular yarn again. The yarn has a marled/plied look which I like, but the separate skeins in the same dyelot are noticably different in color(to me). Some areas of the yarn are also darker. I came to a knot in the second skein and snipped it and conitnued knitting, only to realize the part right before the knot was almost a solid green. I almost ripped it back but my husband said it gave the sweater character. I came to the same issue on the sleeve but did rip it back. You can kinda see what I mean in the following photo.
I guess it looks fine, it still bothers me a little bit...