Alternatives for red/green in diff output

Question

I once read an article arguing that red and green are bad choices for diff, because

• some people have red-green color blindness
• red implies "bad" and green implies "good", but deleted code is often not bad and new code is also not always good.

However, I cannot remember where I found that article and which alternative colors were suggested.

What would be sensible alternative colors for red/green?

Answer 1

因为它还在这里 - 我会选择蓝色和红色。蓝色更中性，红色至少具有“删除”的含义。