The term '洋气' in Chinese can be translated to 'fashionable' or 'trendy' in English. It refers to colors or styles that are considered stylish or up-to-date. '颜色' simply translates to 'color'. Therefore, the phrase '洋气 颜色' can be understood as 'fashionable colors' or 'trendy colors', denoting colors that are popular or fashionable.