I created a cactus replacement sprite [1] based on a public domain find [2].

[1] http://i.imgur.com/SObUP.png
[2] http://www.pdphoto.org/PictureDetail.php?mat&pg=8546

I created some screenshots [3] to compare.

[3] http://imgur.com/a/OoJaC

I need to know from you:
1. Do you like this cactus' colors and shape? - if not, I shall try to find/edit a replacement that has this typical 'green guy with hands in the air' look
2. Do you like the sprite and how it displays in-game? I find the spikes to be weird, I should probably shave them off, as they are in the current license-unknown sprite.