Filter contours - PS CS5

Question

Hello
I have a small problem with a big-generated contour in PS CS5. Sometimes my nature photos coming through art and other filters, and seeking interesting shapes, etc. So far, no problem, some filters only work in 8-bit mode, etc. But I came across a filter contour (stylization). I created from photos with this filter contour - (gray outline on a white background), all OK so far, but the problem came when I wanted to darken the contour. Any tool - curves, levels, brightness, after application darken again after saving back into its original form it is a gray outline. I also tried to duplicate the layer, darkening with blending, etc. everything is always returns after merging layers to its original color - gray. I also tried the contours of other photos and the result was always the same, but the contour is already created with it could not be any load, change it.
Someone solved a similar problem? Thanks for the advice
Progress of work: try to do it by the following procedure: a new image as jpg. Create the image contour (filter-styling-contour). There are several lines of color. I'll try to make adjustments - curves, levels, brightness (I try to highlight contours) and after flattening layers changes back to its original state. Transfer only in black and white to change after merging layers appear properly incurred and gray lines. I want them to darken as through the levels, etc. but again, the resulting graphics will become gray. There was no in foreign forums I have not found the answer, what it will be.

Answer 1

Are you talking about Filter>Stylize>Trace Contour?
If so, you might try running the filter again with the same settings to darken the lines.
Also, viewing an image at 100% view (actual pixels) will give the most accurate results as other views
may show different results due to the interpolation that photoshop uses at other viewing percents.