Let this in, an fyi that since the preview is over 10kb, it won't show up on the main page (But is still accepted)

I took the transparency into consideration, and I recounted again.

This time, I count 23 colors.

I appreciate your edit, but I am trying to keep the dithered look, whether it be slight or not :)

EDIT: I missed a color in the red and pink one. Simply overlooked the darkest red, then didn't see the difference in two very similar grays.

I'll edit the green one, like you suggested. Thank you again for the heads-up.

 EDIT 2: Fixed the green sprite to have one less color, which should bring the colors down to 24.

Alright, I'm letting this in. The piece you linked to will probabl be deleted from the queue though, so I recommend uploading its file to a site like imgur, and putting that link into the description instead :)

I like the green and red ones ;D

NON EDIT: Just checked your colours, you have 25 D: (Transparency counts as a colour)

How about taking this to a WIP thread the Challenge thread in the forums for some help, here's a quickie edit of the green one in 5 colours to your 7.

 Thank you for pointing that out for me, this is my first submission to the weekly challenge.

The challenge calls for only the 4 tiles, you can include the rest in a link in the description though:)