Created attachment 110896 [details]
When creating conditional formatting data bars on non-white cell backgrounds, the data bar gradient fade to white doesnt look that nice. Excel fixes this issue by having the data bar color used as a 1-pixel inner stroke around each data bar.
Created attachment 110897 [details]
Data Bars on different background colors - Calc vs Excel
Look at Excel's data bar features dialog (attachment 110901 [details]), they have a setting for Border and Border Color to achieve this look.
I confirm the current behavior and the enhancement sounds good to me, so setting to NEW.
Win 7 64-bit Version: 220.127.116.11.alpha0+
Build ID: 170616e9f2d30c1302bbb5a7a4b588bc05cd5cc9
TinderBox: Win-x86@39, Branch:master, Time: 2014-12-12_01:58:46
Created attachment 111073 [details]
the excel file used