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Other things to consider are third-party controls. If your application uses third-party controls, take care with their style support (some third-party controls are not style-aware). If your external components do not support styles, you will end up with some styled controls (the originals included in Delphi) and some that are not styled (your external third-party controls).

Go to Tools | Bitmap Style Designer. Using a custom VCL Style, we can also:

• Change application colors, such as ButtonNormal, ButtonPressed, ButtonFocused, ButtonHot, and others.
• Override system colors, such as clCaptionText, clBtnFace, clActiveCaption, and so on.

• Font color and font name for particular controls should be familiar to ButtonTextNormal, ButtonTextPressed, ButtonTextFocused, ButtonTextHot, and many others: