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# Use diffusion dither.
It looks like you used 'pattern'.
Edit: actually, you just want flat colours, and it's dithering them? How odd.
If the background for some reason isn't flat colour to start with, sending the background through photoshop's posterise filter (on the 'image' menu) should fix that. Or maybe you've got the web pallete on, and so it's turning flat colour into two different 'web-safe' colours, dithered.
(, Tue 15 Nov 2005, 20:27, archived)
# ^ nice use of filters
;)
(, Tue 15 Nov 2005, 20:28, archived)
# *starts shopping a rikmunk*
(, Tue 15 Nov 2005, 20:29, archived)
# Pfft!
*waits*
(, Tue 15 Nov 2005, 20:48, archived)
# Well the background was flat colours
and selected from the web colours palette.

meh. I need to make more use of my Photoshop for dummies book.
(, Tue 15 Nov 2005, 20:35, archived)
# Oh, I see, you were stuck on "custom".
That's just a saved set of colours from the last image you opened, or the last image you saved, or something like that, I forget. Wouldn't have contained any of the exact colours used in the background of the new image, so that's why it ended up dithered.
By the way I recommend the built-in online help, it's very good.
(, Tue 15 Nov 2005, 20:38, archived)
# Aaaah!
I'll remember that in future.


So what does 'perceptual' mean?
(, Tue 15 Nov 2005, 20:39, archived)
#
Perceptual

Creates a custom palette by giving priority to colors for which the human eye has greater sensitivity.

Selective

Creates a color table similar to the Perceptual color table, but favoring broad areas of color and the preservation of Web colors. This option usually produces images with the greatest color integrity.

Adaptive

Creates a palette by sampling the colors from the spectrum appearing most commonly in the image. For example, an RGB image with only the colors green and blue produces a palette made primarily of greens and blues. Most images concentrate colors in particular areas of the spectrum. To control a palette more precisely, first select a part of the image containing the colors you want to emphasize. Photoshop weights the conversion toward these colors.

/help menu

Hmm, I might have been completely wrong about custom, it says it's the same as adaptive. Meh. I always use perceptual. Unless I edit the colour table, which makes it into custom.
(, Tue 15 Nov 2005, 20:41, archived)
# I'll probably just stick with perceptual
until the next time something goes wrong and I'm forced to try stuff out.
(, Tue 15 Nov 2005, 20:47, archived)
# it means it`s all done with mirrors and elastic bands
(, Tue 15 Nov 2005, 20:42, archived)
# That explains
why the kittens keep attacking it then.
(, Tue 15 Nov 2005, 20:44, archived)