Summary

Split the print in two, first was black ending at 8mm, then white.
Printed a small white part in upper left of bed to clear out the nozzle before resuming white print.
Used Simplify 3D

Print Settings

Printer Brand:

Creality

                                            <p class="detail-setting printer"><strong>Printer: </strong>                     <div><p>CR-10S</p></div></p>                                                                                <p class="detail-setting rafts"><strong>Rafts: </strong>                     <div><p>No</p></div></p>                                                                                <p class="detail-setting supports"><strong>Supports: </strong>                     <div><p>Yes</p></div></p>                                                                                <p class="detail-setting resolution"><strong>Resolution: </strong>                     <div><p>Black .3, White .1</p></div></p>                                                                                <p class="detail-setting infill"><strong>Infill: </strong>                     <div><p>25%</p></div></p>

Post-Printing

video on dual color printing with Simplify 3d

            <div><p><a rel="nofollow" href="https://www.youtube.com/watch?v=vopV9NnBVPQ">https://www.youtube.com/watch?v=vopV9NnBVPQ</a></p></div>

Ardbeg Glencairn Whisky Stopper