a splash of colour 把本来枯燥或沉闷的事情作了美化或改善

如果某人为某事加了 a splash of colour，意思就是把某个本来枯燥或沉闷的事情作了美化或改善。

例句

Jane's red necklace was a splash of colour against her dull work suit.

Our new green rug should add a splash of colour to our bedroom.

请注意

短语 with flying colours 不是“飞起来的颜色”，而是表示某人以“优异成绩”取得成功。

Simon passed his exams with flying colours.