These thematic pictures of 颜色 ngaan4 sik1 are analogous to a visual dictionary. The theme "颜色 ngaan4 sik1" is split into several parts. For children, especially toddlers from 1 to 5 years old, it is better to divide the sets of cards over several days, or even weeks, so that the information is absorbed better. This is especially true if you are using flashcards to learn cantonese(Colloquial) language that is not your native language.
To expand your cantonese(Colloquial) language vocabulary on the "颜色 ngaan4 sik1" topic, flashcards games are the best way: