The default gauges are very dark for me, so I found this modified textures and a trick to don’t break the integrity check for online flights, and are also safe for future updates because the textures are saved in the C:\users\username\Saved Games\DCS\Liveries\Cockpit_Spitfire_LFMkIX\default
extract the file inside the C:\users\username\Saved Games\DCS\ folder (if your drive is not c:\ then change it)
https://www.dropbox.com/s/x4i8o46716gmou9/spitfire_gauges.zip?dl=1
S!
p.s.
updated…