themeDefaultExcel is the default theme. Users can change base options
themeDefaultExcel( font = getOption("font", default = "Calibri"), font_size = getOption("font_size", default = 12), font_color = getOption("font_color", default = "black"), valign = getOption("valign", default = "center") )
| font | the font to use (default: Calibri) | 
|---|---|
| font_size | the font size to use (default: 12) | 
| font_color | the color of the type (default: black) | 
| valign | the alignment to use in cells (default: center) | 
A set of theme defaults for use in `writeExcel`