Oooops! So yours has a white plunger.
To say the truce, "1989" warned me possibility of white plunger.
But any way, it's not cheap as $6.99. It's a BARGAIN price for an omni 102 in mint condition. You'are lucky anyway. just lacked in not having lucky blues.
One more tip, Focus and Silitec mobels I introduced in your Ultra question have almost same key caps except those for function keys. shapes, color, thickness, two-color-molded made... almost identical.
sandy