Leggy Item Pieces / Color Imbalance

In the 1.5ish years I've played this game, I've gotten:
17 red pieces
7 yellow pieces
7 green pieces
4 blue pieces

Is my RNG just terrible or is something wrong here?

 

Doesn't look like anything is wrong. With your results I believe 35 pieces isn't that big of a sample size to make any estimation that odds were something different than they should be.

Since there are 35 different items in the game we can easily see that the "perfect distribution" of pieces would be very similar to what you have:
- 19 red pieces (you have 17)
- 6 yellow pieces (you have 7)
- 6 blue pieces (you have 4)
- 4 green pieces (you have 7)

In short you have got slightly more yellow and green pieces than average and slightly less red and blue pieces.

 

39 red
23 yellow
14 green
7 blue

 

Oh wow that's one way to look at it. I still feel like it's not very many pieces tho, considering how long I've played. I'm not even F2P lol.