Ugh, those lamps are absolutely awesome! The way the light is cast is wonderful, and the black against the lit blue and with the black frame is really gorgeous. Don't take the cardboard out of the socket.

A silk shade will require you lower the wattage to no more than 40 watts. The candle appears not too tall. Keep them shorter. As below 4 1/2 inch https://specialtylampshades.com/collections/chandelier-shades/products/68546-cream-silk-stretch-shade-candelabra-clip-on-lamp-shades

I'm going with chijim but am going to be even more of an outlier - I like bedside lamps AND bedside tables to NOT match. Looks way more interesting to me. Find a lamp that you think looks good in the space overall, and that plays well with the rest of the room, including your existing lamp. Totally different (IMO) is just fine.

Nice choices above, here are a few more I think would look lovely with your traditional style: https://www.lampsplus.com/products/dalia-champagne-glass-table-lamps-set-of-2__17p79.html ***************************************************************************************** https://www.houzz.com/products/cassian-table-lamp-set-of-2-prvw-vr~158627019 ********************************************************************************************** https://www.houzz.com/products/jago-table-lamps-29-5-set-of-2-prvw-vr~114088000 ********************************************************************************************* Pricier, but so pretty. A bit of retro glam. :) Horchow ********************************************************************************************* This little bit of silver would be fine in there, or you could do gold Rub n Buff on it ... https://www.houzz.com/products/douglas-mosaic-led-table-lamp-green-28-prvw-vr~117158470 ************************************************************************************************* One more green one ... https://www.lampsplus.com/products/uttermost-rovasenda-pale-mint-green-ceramic-table-lamp__1g173.html