KDE 4 applications do not follow color scheme

Hello, I’ve noticed some strange behaviour while switching color schemes in KDE plasma 5 settings. Applications reporting version 4.14 (Kmail, Kaddressbook, Konqueror etc.) do not follow the set color scheme exactly. E.g. Switching from Breeze to openSUSE, they retain blue elements or switching from openSUSEdarkalternate to openSUSE, they retain black background. Is that necessary until they migrate to KF5, or is it something with the themes? Any ideas, please?