Q1: When I place this card in my battle area, can I use a yellow Option card even if I have no other yellow Digimon or Tamers in play?
No. Having this card in your battle area doesn't fulfill color requirements.
Q2: When I place this card in my battle area, can I activate this card's Delay effect even if I have no other yellow Digimon or Tamers in play?
Yes, if this card is in your battle area, you can activate Delay, regardless of color requirements. Color requirements only matter when using Option cards.
Yellow Memory Boost! P-037 SR [Main] Reveal the top 4 cards of your deck. Add 1 yellow Digimon card among them to your hand. Place the remaining cards at the bottom of your deck in any order. Then, place this card in your battle area. [Main] <Delay> (Trash this card in your battle area to activate the effect below. You can't activate this effect the turn this card enters play.) • Gain 2 memory. --- [Security] Place this card in its owner's battle area.
Yellow Memory Boost! P-037 SR [Main] Reveal the top 4 cards of your deck. Add 1 yellow Digimon card among them to your hand. Place the remaining cards at the bottom of your deck in any order. Then, place this card in your battle area.[Main] <Delay> (Trash this card in your battle area to activate the effect below. You can't activate this effect the turn this card enters play.) • Gain 2 memory. --- [Security] Place this card in its owner's battle area.
Yellow Memory Boost! P-037 SR [Main] Reveal the top 4 cards of your deck. Add 1 {{Colour|yellow}} Digimon card among them to the hand. Place the remaining cards at the bottom of your deck in any order. Then, place this card in your battle area. [Main] <Delay> • Gain 2 memory. ---
イエロー• メモリーブースト!! P-037 SR 【メイン】自分のデッキの上から4枚オープンする。その中の黄のデジモンカード1枚を手札に加える。残ったカードは好きな順番でデッキの下に戻す。その後、このカードをバトルエリアに置く。【メイン】≪ディレイ≫(バトルエリアのこのカードを破棄することで、以下の効果を発揮する。この効果はこのカードを置いたターンには発揮できない)• メモリーを+2する。 --- 【セキュリティ】このカードをバトルエリアに置く。