Error(s) in re-building vignettes:
--- re-building 'colorSpec-guide.Rmd' using rmarkdown
--- finished re-building 'colorSpec-guide.Rmd'

--- re-building 'phenolred.Rmd' using rmarkdown

Attaching package: 'spacesRGB'

The following objects are masked from 'package:colorSpec':

    RGBfromXYZ, metadata, metadata<-

--- finished re-building 'phenolred.Rmd'

--- re-building 'photoncounting.Rmd' using rmarkdown
--- finished re-building 'photoncounting.Rmd'

--- re-building 'blueflame.rnw' using knitr
--- finished re-building 'blueflame.rnw'

--- re-building 'convexity.rnw' using knitr
Warning in system(paste(shQuote(texi2dvi), if (quiet) "--quiet" else "",  :
  running command '"C:\PROGRA~1\MiKTeX\miktex\bin\x64\texify.exe" --quiet --pdf "convexity.tex" --max-iterations=20 -I "C:/r_packages/rinst/share/texmf/tex/latex" -I "C:/r_packages/rinst/share/texmf/bibtex/bst"' had status 1
Error: processing vignette 'convexity.rnw' failed with diagnostics:
running 'texi2dvi' on 'convexity.tex' failed

LaTeX errors:
ettes/convexity.tex:150: Package xcolor Error: Undefined color `darkred'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:151: Package xcolor Error: Undefined color `darkred'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:152: Package xcolor Error: Undefined color `darkred'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:156: Package xcolor Error: Undefined color `fgcolor'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:219: Package xcolor Error: Undefined color `darkred'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:220: Package xcolor Error: Undefined color `darkred'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:253: Package xcolor Error: Undefined color `darkred'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:344: Package xcolor Error: Undefined color `darkred'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:350: Package xcolor Error: Undefined color `fgcolor'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:355: Package xcolor Error: Undefined color `darkblue'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:363: Package xcolor Error: Undefined color `fgcolor'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:367: Package xcolor Error: Undefined color `darkblue'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:386: Package xcolor Error: Undefined color `fgcolor'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:390: Package xcolor Error: Undefined color `darkblue'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:416: Package xcolor Error: Undefined color `fgcolor'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:423: Package xcolor Error: Undefined color `darkblue'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:433: Package xcolor Error: Undefined color `fgcolor'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:455: Package xcolor Error: Undefined color `darkred'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:461: Package xcolor Error: Undefined color `fgcolor'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:466: Package xcolor Error: Undefined color `darkblue'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:472: Package xcolor Error: Undefined color `darkblue'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:491: Package xcolor Error: Undefined color `fgcolor'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:495: Package xcolor Error: Undefined color `darkblue'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:502: Package xcolor Error: Undefined color `fgcolor'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:506: Package xcolor Error: Undefined color `darkblue'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:512: Package xcolor Error: Undefined color `darkblue'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:538: Package xcolor Error: Undefined color `fgcolor'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:545: Package xcolor Error: Undefined color `darkblue'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:554: Package xcolor Error: Undefined color `fgcolor'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:588: Package xcolor Error: Undefined color `shadecolor'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:603: Package xcolor Error: Undefined color `shadecolor'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:603: Package xcolor Error: Undefined color `shadecolor'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:603: Package xcolor Error: Undefined color `shadecolor'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:603: Package xcolor Error: Undefined color `shadecolor'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
ettes/convexity.tex:603: Package xcolor Error: Undefined color `shadecolor'.

See the xcolor package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              

--- failed re-building 'convexity.rnw'

--- re-building 'emulation.rnw' using knitr
09:14:02.552 WARN  colorSpec::product.colorSpec(). The returned matrix is ambiguous; because it depends on the splitting. Inspect the matrix carefully. 
09:14:02.572 WARN  colorSpec::product.colorSpec(). The returned matrix is ambiguous; because it depends on the splitting. Inspect the matrix carefully. 
--- finished re-building 'emulation.rnw'

--- re-building 'gallery.rnw' using knitr
--- finished re-building 'gallery.rnw'

--- re-building 'inversion.rnw' using knitr
--- finished re-building 'inversion.rnw'

--- re-building 'lens-aging.rnw' using knitr
--- finished re-building 'lens-aging.rnw'

--- re-building 'optimals.rnw' using knitr
--- finished re-building 'optimals.rnw'

SUMMARY: processing the following file failed:
  'convexity.rnw'

Error: Vignette re-building failed.
Execution halted