1. A water-insoluble coloring compound having a structure represented by Formula (1):
in Formula (1), R1 represents an alkyl group, an aryl group, or an amino group; R2 represents a carboxylic acid ester, a carboxylic acid monoalkylamide or a carboxylic acid dialkylamide; A represents a carbonyl
group or a sulfonyl group; and R3 and R4 each independently represent an n-butyl group, an octyl group, a cyclohexyl group, a 2-ethylhexyl group, a dodecyl group or
a phenyl group.