5 official rulings from Bandai, last ruled Sep 20, 2024. Straight answers to how this card actually resolves.

Which card is added to your hand by this card's [On Play] effect?
One "Blue Digimon card" and one "Green Digimon card."
Ruled Sep 20, 2024
If the cards I reveal from my deck include only either a blue or green Digimon card, can I only add 1 card to my hand?
Yes, if you only reveal one or the other, you only get to add one card to your hand.
If the cards I reveal from my deck include 2 multi-coloured Blue-Green Digimon cards, can I add both of those cards to my hand?
Yes, you may add them both to your hand.
If the cards I reveal from my deck include both a Blue-Green Digimon card and a single-coloured Blue Digimon card, can I choose to add just 1 of them to my hand?
Yes, you can choose to add the Blue-Green Digimon as a Blue Digimon so that there are no other Green Digimon to add.
If the cards I reveal from my deck include both a Blue-Green Digimon card and a single-coloured Green Digimon card, can I choose to add just 1 of them to my hand?
Yes, you can choose to add the Blue-Green Digimon as a Green Digimon so that there are no other Blue Digimon to add.
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Questions and answers are Bandai's official rulings, collected and translated by the DigimonCardGame Wiki community and reused here under CC BY-SA. Card names and card text are © their respective publishers; Combalo is not affiliated with Bandai.