Photoshop GIF color dithering problem


Trying to make a GIF in Photoshop CC here, but having some problems over the quality of the color in some images.

When I have 100% dithering, some dark pixels appear in a green area over this logo:

enter image description here

But when I reduce the dithering, even just to 99%, the dark pixels disappear:

The thing is, when I reduce the dithering to 99%, the quality of color in the other pictures I used gets compromised.

I guess what I'm asking is if there's a way to have 100% dithering without the dark pixels appearing in the logo.

Can someone help, please?

3/3/2016 8:30:00 PM

Change the palette to "adaptive" and/or increase the number of colors. With a only 3 colors (including white) there is no reason to dither at all if you use adaptive with 256 color indices.

3/3/2016 9:07:00 PM