A way to search by color exists, but you cannot search for artifacts...
You can filter by card type. It has artifact on it. I would like to see "equipment" added to sub type. I havent been able to filter down to just artifact equipment.
Correction. Without searching under "type" and typing equipment in the search box and filterig "artifact" in type...
Card filter > Type > Artifact
Choose Text instead of Name (under the input bar) and write 'Equip'.
That's how I've searched Equipments since ever. 😁
Or alternatively deselect all colours and turn on the only selected colours switch...