Marks: Fix appearance
Marks: Fix appearance

Use KColorScheme where possible

REVIEW: 118837

jfmcarreira/kate,cmacq2/kate,sandsmark/kate,jfmcarreira/kate,cmacq2/kate,jfmcarreira/kate,DickJ/kate,sandsmark/kate,DickJ/kate,DickJ/kate,sandsmark/kate,DickJ/kate,cmacq2/kate,sandsmark/kate