It allows you to place 1 level 4 or lower [DM] trait Digimon card from your trash as this Digimon's top digivolution card. Then, you choose and delete 1 of your opponent's Digimon with the same color as any of this Digimon's digivolution cards. If this Digimon has 6 or more colors in its digivolution cards, you instead choose and delete 1 of each of your opponent's Digimon with different colors. If you will delete 1 of each of your opponent's Digimon with different colors, you must choose 1 of your opponent's Digimon for each of the colors (red, blue, yellow, green, black, purple, and white) and delete it whenever possible.

No, you can't. If you will delete 1 of each of your opponent's Digimon with different colors for this card's [On Play] [When Digivolving] effect, you must choose 1 of your opponent's Digimon for each of the colors (red, blue, yellow, green, black, purple, and white) and delete it whenever possible. You can't choose 1 Digimon multiple times.

No, you can't. If you will delete 1 of each of your opponent's Digimon with different colors for this card's [On Play] [When Digivolving] effect, you must choose 1 of your opponent's Digimon for each of the colors (red, blue, yellow, green, black, purple, and white) and delete it whenever possible. If they have a red single-color Digimon and a red/blue 2-color Digimon, you must reference the different colors and delete 1 of each whenever possible.