How do you set alternating colors in the list of topics? It helps usability a lot, but it is all white by default.
example:
You can achieve this with a CSS customization. Here’s an example to get you started:
.topic-list-item:nth-child(even) {
background-color: #EEE;
}
.topic-list-item:nth-child(odd) {
background-color: #FFF;
}
Here’s how this looks on Meta:
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And for those who are looking to change the background of topics, here’s the solution:
div.topic-post:nth-child(odd), div.small-action:nth-child(odd) { background-color: #FAFBFF; } div.topic-post:nth-child(even), div.small-action:nth-child(even) { background-color: #F6F6FF; }
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And here’s the discussion about why it isn’t the default anymore:
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@fefrei Care to extract this into a super simple theme component? 
@Silvanus same for your topic tweak. I was thinking maybe we’d just include it in the “tiger striping component” but commented out by default, but we might as well make it a component of its own as they really are two completely separate pieces of styling.
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Sure!
Can you tell me why I cannot use $primary-low in the theme component? It’s used all over the place in core (e.g. as the background color of buttons), and I think it’s a good color for the darkened rows, but it’s undefined:
Error: Undefined variable: "$primary-low".
on line 2 of theme_field.scss
>> background-color: $primary-low;
----------------------^
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I’ve run into the same problem. What solved it for me was adding this at the top:
@import "common/foundation/variables";
And then you can use those colors.
That’s the short story, the long story is here:
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Why not 
stripes? I guess 
stripes are less… black and white?
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How would you do this on a topic detail page for alternating replies?
That it somewhat more involved. You can try applying the same principle to the post-stream class, but this not only contains replies, but also “gaps”, like the 2 years later above your post, so they also count and may be affected.
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当使用浅色主题或深色主题时，如何实现不同颜色最佳？
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此主题可能可以回答您的问题 
:
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