if (colorType == 3) {
PdfArray colorspace = new PdfArray();
colorspace.add(PdfName.INDEXED);
colorspace.add(getColorspace());
colorspace.add(new PdfNumber(len / 3 - 1));
ByteBuffer colortable = new ByteBuffer();
while ((len--) > 0) {
colortable.append_i(is.read());
}
colorspace.add(new PdfString(colorTable = colortable.toByteArray()));
additional.put(PdfName.COLORSPACE, colorspace);
}
else {
Utilities.skip(is, len);
}