英语翻译Also noted was his first concern with the question of colours.Also noted怎么能做句子主语啊?

Also noted在这个不是做主语。这个句子是一种倒装，把表语和主语进行了倒装。也就是说，原句是：His first concern with the question of colours was also noted.

这是倒装结构,强调后面的his first concern with the question of colours,原句应为His first concern with the question of colours was also noted,译为,同样,他也强调指出了自己对于颜色问题（种族问题）的关心.
注：括号里要看上下文,没特殊要求就是颜色,如果是政论文或者时文很可能是种族