ID:843953
 
I am learning how to icon. Can someone tell me when you use a different brightness(lum) of the same color in an icon? I know one reason is because of the lighting. Another reason is an outline. But those aren't the only reasons why I see different brightness of the same color. There are squares inside of an outline (for example: arms, legs etc...) that is the same color but have different brightness. I attached an example. See there are different brightnesses of the same color within the arms, legs etc... How and especially when do you change the color's brightness within the icon?

Here is the attachment: 2012-06/TheDarkChakra-0003/phoenix.dmi
They are not the same color. They are all different colors, some are just more saturated than others. You should typically change the red, blue, or green hue for making new similar colors, but I suppose saturation works too. The different colors can then be conveyed as material, for shading, or small details. It depends.
They look different shades of the same color.
Because they are, though I advise you never to use them for shading unless your making a monochrome picture or grayscale.

There are some really good tutorials on this site by TMDI (theMonkeyDidIt) and on pixeljoint.com.
It seems its called shading and there are 2 types: dithering and cel shading. I gotta learn those. Any good websites teaching that?
Thank you. And I did read about it. But still a bit confused.

It seems that shading is done depending on the sunlight and the outline is also darker. Is that true?
It depends on your style, the direction of light, and if you're lazy or not.
ok for example your making a bucket this would be what its like:

o
b

o = sun
b = bucket

make it so that areas closer to the sun it lit up and has not that many shadows

and make areas opposite full of shadows and make it dimer
In response to Shwb1
Shwb1 wrote:
ok for example your making a bucket this would be what its like:

o
b

o = sun
b = bucket

make it so that areas closer to the sun it lit up and has not that many shadows

and make areas opposite full of shadows and make it dimer

That's about as helpful as saying "this sux man".
I still don't understand why and what kind of different colors are used in that icon. Why are there so many different colors used? Or are those shades of the same color? If so why are they randomly placed all over?