Colorless is a state where a card has no color. Gates and My Logicalist cards have no color. There are only two cards that are colorless that are neither of those, the promotional cards Luck & Logic and Words of Gratitude, although the latter has an ability that treats the card has being every color.
In the official site's databases, the SP version of Luck & Logic is specified to be white (白 shiro), the regular version, Words of Gratitude, gate cards, and My Logicalist cards have hyphens (-), and My Logicalist cards in HBT02 Happy×Heart are said to have no color (無 mu).
|Gameplay of the Luck & Logic TCG|
|Colors||Yellow ● Red ● Green ● Blue ● Colorless|
|Worlds||Monolium ● Disfia ● Tritomy ● Tetra-Heaven ● Septpia ● Luck&Logic Club|
|Card Types|| Member (Logicalist ● Foreigner ● Tranceunion ● Super logicalist)|
Tactics ● Gate ● Paradox ● My Logicalist
|Phases||Stand phase ● Draw phase ● Level phase ● Main phase ● Battle phase ● End phase|
|Zones|| Deck (Deck construction) ● Hand ● Field (Circle) ● Level zone ● Stock zone ● Battle zone ● Intercept zone|
Paradox zone ● Drop zone ● My Logicalist zone ● Purge zone ● Remove zone ● Secret tool zone
|Game Actions|| Attack ● Cost ● Destroy ● Draw ● Discard ● Logic ● Luck Drive ● Mobilize ● Purge|
Set ● Stand / Rest ● Refresh ● Stock boost ● Stock open/close ● Trance
|Terms and Keywords|| Ability (Logic Drive) ● Blink Move ● Covenant ● Explosion ● EX Soul ● Make|
Transmute (Secret Tool Skill) ● Trance Change ● T-rank ● Vanguard