color scheme

hi. i changed my kde color scheme and it changed firefox’s and opera’s color scheme. sometimes it can be difficult to read links or articles on web pages. i don’t want to change their default color schemes. how can i do that ?

Personal Settings > Appearance > Colors > Options
Unckeck “Apply colors to non-KDE4 applications”

Firefox should use GTK colors. However Opera is based on QT and will still used KDE colors (more or less).