When colorizing numbers (black for positive numbers, red for negative numbers), I usually use this snippet:
Ive seen some variation like this one below but Im not sure what COLOR 5 means.
What I would like to know is, what colors are suported for these color descriptors and if it is possible to provide a hex value instead? (Ive tried it, didnt work so maybe Im doing it incorrectly).
I believe at least values listed in org.apache.poi.ss.usermodel.IndexedColors should be supported. They also should be backward compatible with older versions of Excel.