Do you have Poser, RorrKonn?

Just wondering...

"I learnt that if one hopes filter or computer-generated background will improve toon, that means said toon should be deleted."

 

Can't remember the last time I heard of non-computer assisted hand color separations or hand painted coloring (that didn't end up digitized) in the print media bound comics. Photoshop and the like are the industry standard process for coloring comic work for probably the past two decades. The original line-work art is scanned and then lettered and colored within an image editor (generally PS/Illustrator), it's as simple as that.

...hell even the inking is done in a computer in many cases.