Error(s) in re-building vignettes:
  ...
--- re-building ‘XLConnect.Rnw’ using Sweave
Loading required package: XLConnect
XLConnect 1.0.5 by Mirai Solutions GmbH [aut],
  Martin Studer [cre],
  The Apache Software Foundation [ctb, cph] (Apache POI),
  Graph Builder [ctb, cph] (Curvesapi Java library),
  Brett Woolridge [ctb, cph] (SparseBitSet Java library)
https://mirai-solutions.ch
https://github.com/miraisolutions/xlconnect
Loading required package: zoo

Attaching package: ‘zoo’

The following objects are masked from ‘package:base’:

    as.Date, as.Date.numeric

Loading required package: ggplot2
`geom_smooth()` using formula 'y ~ x'
`geom_smooth()` using formula 'y ~ x'
Error: processing vignette 'XLConnect.Rnw' failed with diagnostics:
Running 'texi2dvi' on 'XLConnect.tex' failed.
LaTeX errors:
! Package xcolor Error: Undefined color `CadetBlue'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
! Emergency stop.
 ...                                              
                                                  
l.157 
      
!  ==> Fatal error occurred, no output PDF file produced!
--- failed re-building ‘XLConnect.Rnw’

--- re-building ‘XLConnectImpatient.Rnw’ using Sweave
Error: processing vignette 'XLConnectImpatient.Rnw' failed with diagnostics:
Running 'texi2dvi' on 'XLConnectImpatient.tex' failed.
LaTeX errors:
! Package xcolor Error: Undefined color `MidnightBlue'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
! Emergency stop.
 ...                                              
                                                  
l.70 ...kg{XLConnect} for the Impatient} \\[15pt]}
                                                  
!  ==> Fatal error occurred, no output PDF file produced!
--- failed re-building ‘XLConnectImpatient.Rnw’

SUMMARY: processing the following files failed:
  ‘XLConnect.Rnw’ ‘XLConnectImpatient.Rnw’

Error: Vignette re-building failed.
Execution halted