Sunglasses of Urza 
Artifact
$0.69 #25659 0.11 33.1 years
You may spend white mana as though it were red mana.
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Cards similar to Sunglasses of Urza expected a card that isn't here?
Reports become test cases the matcher is graded against before an update ships. Delvefall isn't a chatbot guessing, it compares the printed rules text of every card with plain math, and examples like yours decide which differences should count.
False Dawn80%
$0.31↓#282380.00↓25.3 years↓
"Until end of turn, spells and abilities you control that would add colored mana instead add that much white mana. Until end of turn, you may spend white mana as though it were mana of any color."
Celestial Dawn74%
$0.47↓#17265↑0.0729.9 years↓
"You may spend white mana as though it were mana of any color. You may spend other mana only as though it were colorless mana."
Quicksilver Elemental74%
$20.07↑#7905↑0.60↑22.9 years↓
"You may spend blue mana as though it were mana of any color to pay the activation costs of this creature's abilities."