Recently, I bagan the migration to a different invoicing system. One of the apps that caught my eye was Billings 3. While perusing their Anatomy of an Invoice page, I noticed something interesting. One of the bullet points:

5. It is best to use alternating row colors for the line items area. Make it easy for the client to follow each line item from left to right.

That's good advice. But this is the image that accompanies the page:

Hmm... Well, it's a little light, maybe we just can't see the alternating row colors. Let's darken it and up the contrast:

Maybe they should take their own advise?

(As an aside, it also seems this functionality is lacking from the software itself, not just the example image.)