This issue is basically to revive one I previously found: #21423

The issue was closed when underlining functionality was added, but the original request, for high intensity colours, was never addressed. Any chance these could be added?

I was using the c++ extension and my program would log using the ANSI codes. I saw no visible difference in colour between, for example:

Red (\033[31m)
Bright Red (\033[31;1m)
aixterm Bright Red (\033[91m)

Now clearly you've gone for the "bold" interpretation of the "bold or high intensity" option of having ";1" after your colour. But is there any chance of the aixterm versions working?