Using the `--seg_type trappedball` command, the colored lines turn into black lines, resulting in an issue where the colors cannot be filled correctly.

[tanglangxia]

Using the "--seg_type trappedball" command causes the colored lines to turn black, resulting in an inability to fill the colored lines correctly.

Additionally, during testing, as long as the "color_seg" folder exists, using "--skip_seg" without the "--seg_type trappedball" command still leads to the same issue of colored lines turning black and not being filled correctly.

However, if the "--keep_line" command is added, the files generated in the keepline folder are processed correctly for the colored lines, but they are not binary images.