Github user 1ambda commented on the issue: https://github.com/apache/zeppelin/pull/2401 Additionally, 7. The color of main section is too bright. It doesn't go along nav color. Here are few options we can use. - Add a color can be a bridge (e.g button or shadow for nav, ...) - Use more deep blue and add border-shadow for nav to distinguish them easily. - Or change nav color - ... and more   8. The color for buttons in main section What about `#33a6cc` for background? The official website is already using the color for buttons below.  Here is a sample. 
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