MATLAB: Dicomwrite with colormap error

How can I get a colormap to be saved with a dicom file using dicomwrite? I'm also getting these types of error

    I = dicomread([fpath filename]);
    cmap = parula(64);
    filename2 = filename(21:end);
    dicomwrite(I,cmap,filename2);

Error using dicom_prep_metadata>checkSC (line 127)

Secondary Capture image class (1.2.840.10008.5.1.4.1.1.7.2) must have MONOCHROME2 photometric interpretation.

Error in dicom_prep_metadata (line 81)

checkSC(IOD_UID, metadata, X, dictionary);

Error in dicom_create_IOD (line 26)

metadata = dicom_prep_metadata(IOD_UID, metadata, X, map, options.txfr, options.usemetadatabitdepths, dictionary);

Error in dicomwrite>write_message (line 274)

[attrs, status] = dicom_create_IOD(SOP_UID, X, map, …

Error in dicomwrite (line 210)

[status, options] = write_message(X, filename, map, metadata, options);

Error in main (line 14)

dicomwrite(I,cmap,filename2);