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I've got a line art drawing of a dragon that I'm trying to color. I don't necessarily care if I use Illustrator, Photoshop, or Sketchbook Pro; I'm just trying to figure out the best way to color the drawing. I created the line art image in Illustrator.

I know to use live paint and live paint bucket for contained lines, but how do I easily 'fill' in areas, like the fur on the chest, that isn't a fillable object? I know how to do it the painful way, i.e. duplicate the lines, complete them to create a closed container, and then fill that container...but ugh, takes forever.

-----EDIT----New Information----

So probably the coloring I'm looking for is 'cel shading' style:

Example of cel-shaded dragon
Artist: Raijin-Pooch

Also, the line art was done in two stages. In the first step I used (accidentally) a calligraphy brush that, when I turned on live paint, dumped out to simple line art. I then had to do a bunch of touch-ups, and those were done with a line art brush, so they're thicker. Hence the 'poor' quality. I'm certainly open to suggestions--I'm new to the digital illustration world. I've got a ton of experience with PS/AI, just not in this particular space!

dragon line art

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Just a tip about the calligraphy lines going to boring homogenous lines.. Before you do the livepaint, go Object > Expand appearance. –  sedd87 May 20 at 0:56

3 Answers 3

This is a bit broad, not knowing the style of coloring you are after.

If you merely want flat solid colors, then Illustrator's Live Paint Bucket Tool will handle that just fine. Select all, grab the Live Paint Bucket Tool and start clicking.

If you want more painterly color (and it sounds like you do) then Illustrator isn't a good tool for that. I would copy the line art and paste it as a Smart Object into Photoshop. Set the Smart Object blend mode to Multiply. Then add layers below the smart object and paint colors on those layers with a brush.

Illustrator is for flat solid shapes or gradients. If you want smooth transitions between areas, you'll need to create additional shapes and apply either gradients or gradient meshes to those shapes. You can not easily get color transitions with Illustrator unless you manually create additional shapes.

Update after question edit:

To complete the cell style of color you'll need to think of the piece in terms of shapes for each color area, not as a whole. Live Paint isn't going to work, but it's possible in Illustrator.

Basically you need to think like you were working with cut out pieces of construction paper for each color - manually creating shapes for highlights and variations.

Here's a quick example of an object stack to color the tail:

tail

The best thing you can do to facilitate this type of coloring is to learn to close your paths and create shapes, rather than a series of disconnected paths. Vector coloring works much better and is far more reliable when shape with fills are closed. Live Paint will auto-close many things, if Live Paint is an option but for many things Live Paint simply isn't appropriate. You can start with the Live Paint Bucket Tool to A) Close Shapes, and B) lay base tones down. But after that you need to grab the Pen Tool or something to create additional shapes for additional color areas.

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If you had to start from scratch to create something similar to the cel-shaded example, which program would be your weapon of choice? That level of detailed illustration is way out of my league. I know it can be created in Illustrator, but which program makes more sense to use? –  JohnB Dec 2 '13 at 8:15
    
I'd actually start and end in Illustrator. It just takes practice and learning to "think" or "Plan" the construction. Well.. I'd start with a hand-drawn sketch scanned and placed into Illustrator then manually traced. –  Scott Dec 2 '13 at 8:17
    
You simply learn to think in stacks. Base color, second level for detail, third for shadows, fourth for highlights, fifth for textures, etc. –  Scott Dec 2 '13 at 8:18
    
Definitely something I need to work on. I'm used to tearing artwork apart for screen printing preparation, not building it up :) Thanks for the insight –  JohnB Dec 2 '13 at 8:22

Scott is on the money. Also just to answer your issue with colouring the fur for example, you could use the polygonal lasso tool in Photoshop to select the area appropriately rather than creating a closed container using lines.

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If you have photoshop then i'd say best way to do it is first make a mask by getting clean selection then use bucket where possible and use brush everywhere else.

For your photo, i'd fill colors in a separate layer because then selection would cease to exit if some colors overlap.

enter image description here

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Interesting choice of colors for a dragon! Your method does not appear to produce clean results: i.stack.imgur.com/ouMR9.png How would you address that? –  JohnB Dec 1 '13 at 20:59
    
this is just rough coloring to test out what i was saying... –  Muhammad Umer Dec 2 '13 at 1:14

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