Who has never had fun, in their young years, painting their nails with the tubes of gouache from school? Already adopted by the most nostalgic, the rainbow manicure trend is likely to bring back good memories, while allowing your creativity to express itself. Depending on your talent for nail-art and your tastes, there are 1001 ways to appropriate the rainbow manicure trend and play with colors–pastel as well as bolder–but also with patterns. OK! It is recommended that you use gentle manicure sets to prepare nails before you begin. If you don’t have nail tools, you can visit our nail supply …