@dli, I don't know which is "tab tile". Could you provide more details, such as add an attachment. Thanks.

(In reply to comment #0)
> Description of problem:
> tab title font colour should be different with background.
> 
> Version-Release number of selected component (if applicable):
> 
> 
> How reproducible:
> 
> 
> Steps to Reproduce:
> 1. nitrate -> report -> Overview
> 2. select one product
> 3. tab tile can't be seen.
> 
> Actual results:
> 
> 
> Expected results:
> 
> 
> Additional info:

(Just now talked with dli about this issue. Got the meaning of "tab tile")

Verify version:
3.5 on stage;

Verify steops:
1. nitrate -> report -> Overview.
2. Click one product, then enter into the page of the product reporting.
3. Click one tab(Overview/Versions/Builds/Components) in the top right of page, then enter into that page. 
3. Verify: Whether what you clicked tab tile font color is different with its background. 

Actual results:
tab tile can't be seen.

Verify result: FAILED

Created attachment 513554 [details]
problem of tab tail

About this bug, not easy to understand "tab tail", so please refer to this attachment.

Deferred to 4.0