https://bugs.freedesktop.org/show_bug.cgi?id=88755

            Bug ID: 88755
           Summary: LibreOffice Calc - Conditional Format - Color Bar
                    functionality desperately needs improvements and
                    corrections
           Product: LibreOffice
           Version: 4.3.5.2 release
          Hardware: Other
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Libreoffice
          Assignee: [email protected]
          Reporter: [email protected]

Working on a quick table to analyze some information and figuring Conditional
Format - > Color bars would be great. Just green to red. 

It is a struggle to pick the same colors over time for several sets of data,
because:

- you can only see three colors at a time in a scrolling menu
>>> request a larger UI window with 24-36 or so most common quick picks - see 
>>> for example the font or background color picker

- like colors are not grouped, for instance no grouping of greens reds blues
etc they're all over the list

- some of the colors are imo grossly unusable or non-existent some of the reds
for instance are just black on screen, one sees this in the font and background
color picker too, but it is easier to ignore.

- there are also problems whereby a green to red scale turns certain cells
black, which I cannot figure out. I have a simple 0 - 60 value bar and the
exact middles turn black???
>>> Added problem here is that when the cell turns dark, there is no automatic 
>>> switching to white font, so you could actually read the value in the cell. 

So you'd need an additional conditional format or systemwide preference, if
cell is shaded above a certain value and contrast between cell shade and font
color is less than x then switch default text color from black to white.

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