Don't worry too much about being color blind.
The tree is already the correct color, so you know that it is brown, just use the same colors that are on the sprite and you will be fine. The colors in your palette structure won't change (unless you edit them, of course) so when you where the colors are you will be fine using them and you don't have to blame your colorblindness. I hope that made sense.
The tree overall is fine. I would change parts here and there If i wanted to refine it/perfect it, but it's nothing to worry about.
That's a sound way of looking at it, thanks ! I am inclined to agree with the part of not worrying about it though, if I try to perfect every little tile in the set I'll go insane ! I also haven't the time to, but I do what I can to make it the best I can with the time I have, which is why I like to post a lot if screens so others can help me improve upon The set and quest.



