Description of the problem
I want to write text of A' on a figure with text box filled by a colour of fill='230'. When I use position='CM' to specify the position of the text, the A' -G230 is shown in the figure. I think the attribute fill='230' have not been correctly parsed.

Minimal Complete Verifiable Example
label = "A\'"
fig = pygmt.Figure()
fig.basemap(region=[0, 10, 0, 10], projection="X4c/4c", frame=True)
fig.text(
text=label,
position='CM',
fill='230'
)
fig.show()
Full error message
No response
System information
PyGMT information:
version: v0.11.0
System information:
python: 3.9.13 | packaged by conda-forge | (main, May 27 2022, 17:00:33) [Clang 13.0.1 ]
executable: /Users/xumijian/miniconda3_arm/bin/python
machine: macOS-14.2.1-arm64-arm-64bit
Dependency information:
numpy: 1.24.2
pandas: 2.2.1
xarray: 2023.5.0
netCDF4: 1.6.0
packaging: 24.0
contextily: None
geopandas: None
ipython: None
rioxarray: None
ghostscript: 10.02.1
GMT library information:
cores: 10
grid layout: rows
image layout:
library path: /Users/xumijian/miniconda3_arm/lib/libgmt.dylib
padding: 2
plugin dir: /Users/xumijian/miniconda3_arm/lib/gmt/plugins
share dir: /Users/xumijian/miniconda3_arm/share/gmt
version: 6.3.0