sekteilone wrote:Ok. Thank you for the hint. But can you tell me what Ink I should use for e.g. skin....or...a blue coat or a red coat? Something like that would help alot.
It depends on the intended effect youre going for, but as the above poster states, brown ink is sort of the go-to ink color for most applications - it can be used to give darkened effect for most colors, weathering, etc - think of it as the color of the water after washing really dirty hands. This is the kind of color that's naturally occuring in real life, and for the most part covers your need for darkening crevices as brown is a neutral color that provides contrast/compliment to many colors.
For advanced applications, for standard fair skin, I've seen great successes with using washed out green ink with light skin tone drybrush to blend it in. This example yields much more realistic skin tone (if you stare at yourself long enough without an ounce of bias, you'll see that your face has all ranges of colors like purple, green, blue, red, yellow. Nothing in real life is actually monochromatic). There's a post somewhere where one member used purple tone to accentuate the folded in parts of a faded yellow fabric - this is an example of such application of contrasting color.
So my 2 cents would be experiment with different colors (using thinned paints), and when you find one color that you feel comfortable with/like, go buy a batch of premade ink if you so choose to do so.
I currently work with 3 different inks (brown, black, green), and I've only gotten the green because I paint a lot of dark angels and didn't want to wash down green paints EVEYRTIME I needed to blend in the gradients. I still do thin the inks a bit as I find them too glossy for my taste.
Hope this helped.