Hey Arthur,
since the PicToBrick application works with color quantization, the results should become better the more colors you define. But the colors that are predefined in PicToBrick are no LDraw colors. So, recoloring might still result in a distorted image. You would get the best LDraw results, if you use a PicToBrick configuration that includes all known LDraw colors.
I created such a configutation file: PicToBrick_LDraw_Top_View.cfg. Just copy it in your PicToBrick working directory. It contains all the solid colors from the LDConfig.ldr (UPDATE 2012-09-13).
With a new version of the converter you can migrate the new mosaics, too.
Rolf
since the PicToBrick application works with color quantization, the results should become better the more colors you define. But the colors that are predefined in PicToBrick are no LDraw colors. So, recoloring might still result in a distorted image. You would get the best LDraw results, if you use a PicToBrick configuration that includes all known LDraw colors.
I created such a configutation file: PicToBrick_LDraw_Top_View.cfg. Just copy it in your PicToBrick working directory. It contains all the solid colors from the LDConfig.ldr (UPDATE 2012-09-13).
With a new version of the converter you can migrate the new mosaics, too.
Rolf