Any kind of processing removes font colors.

[IoSonoAndreaZ]

Describe the bug
I have an italian sub with hearing impaired tags that I don't want, but font colors I want to keep.
If I try "remove HI tags", "OCR Fixes", "Common Fixes", it removes also the font settings. But this should happen only when choosing "Remove Style tags" I suppose.

To Reproduce
Subtitle example: https://www.opensubtitles.org/en/subtitles/12967395/the-count-of-monte-cristo-the-castle-it

Expected behavior
I want to remove [HEARING IMPAIRED] stuff but keep the tags.

Software (please complete the following information):

• Bazarr: 1.5.1