Hello everyone,
Thanks for the replies received so far.
The answer received is none with the output below,
> [1] "AAPL"
>> ... ... ... ... > null device
1
I guess it may be related to one of the several libraries loaded by default
at startup via .Rprofile. However,
at the same time, I don't know which one or even if that could be the issue.
My main interest is only to change the inner plot area background. I can
change its color in the outer region
along the plot itself.
Regards,
--
André Luiz Tietbohl Ramos, PhD
On Thu, Jan 15, 2026 at 10:11 AM Enrico Schumann <[email protected]>
wrote:
> On Thu, 15 Jan 2026, Enrico Schumann writes:
>
> > On Wed, 14 Jan 2026, Andre Luiz Tietbohl Ramos writes:
> >
> >> Hello,
> >>
> >> Is there a way to customize quantmod theme colors? This great library
> >> works fine however I rather change its color theme. So far, I have been
> >> able to use both white and black themes.
> >> I tried to use the chartSeries theme command described below to no
> avail.
> >> I tried even without a theme name, e.g. white or black. An example is
> below,
> >>
> >> stock.plot <- chartSeries(stock.time_interval, ## ativo,
> >> name = stock.name,
> >> type = "candlestick",
> >> subset='2025-07::2026-01',
> >> theme = chartTheme("white",
> up.col='darkgreen',
> >> dn.col='darkred',
> >> bg.col='gray',
> >> selection.color='gray'),
> >> TA = NULL
> >> )
> >>
> >> Could anyone help, please?
> >>
> >> TIA,
> >>
> >> --
> >> Andre Luiz Tietbohl Ramos, PhD
> >>
> >
> > With quantmod 0.4.28 and R 4.5.2, and ESS (but on GNU/Linux),
> > I can change colours, e. g.
> >
> > library("quantmod")
> > getSymbols("AAPL")
> >
> > chartSeries(
> > AAPL,
> > type = "candlestick",
> > subset = '2025-07::2026-01',
> > theme = chartTheme("black",
> > up.col = "blue"))
> >
> > gives me "blue" up-bars. The same example also works
> > when I run it from a terminal.
> >
> > Could this be some Apple-specific thing?
>
> What happens when you send the graphic to a PDF, e.g.:
>
> pdf("some-file-name.pdf")
> library("quantmod")
> getSymbols("AAPL")
>
> chartSeries(
> AAPL,
> type = "candlestick",
> subset = '2025-07::2026-01',
> theme = chartTheme("black",
> up.col = "blue"))
> dev.off()
>
> Does the colour show up?
>
>
> --
> Enrico Schumann
> Lucerne, Switzerland
> https://enricoschumann.net
>
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