Having to always change the default fonts, colours etc. to your particular style can get rather tiring. So we’ve introduced a new file called ‘theme.txt’ that gives you control over the default properties of Helm controls.
Where is the theme.txt file?

How the theme.txt file is structured

The basic format is the same for all settings: <Helm property>=<value>.The file is divided into sections. Each section has a heading title in square brackets like this [BUTTON].The [BASE] section contains settings that apply to all controls and the remaining sections set properties for specific control types. You’ll see that you can override the BASE setting in a control setting. An example of this is Look.Point. In BASE this is set to 18 and in TEXTFIELD it is set to 14, changing the default point size for that particular control type.
You can put any ‘assignment’ in any section, e.g. Font.Name=”Arial” in BASE. All sections that ‘derive’ from base will find it there. If a higher-level section redefines Font.Name, then that overrides the BASE definition for those objects.
How theme properties inherit
Font has following sub-properties : Font.Color, Font.Name, Font.PointSize, Font.Opacity, Font.ShadowDistance, Font.Alignment
BASE Width Height | |___THUMBNAIL | Color | Font | |___DROPDOWN | Color | Font | DropDownCount | | | |___IMAGEPICKER | |___IMAGE | Color | Image | Stretch | |___LABEL | Caption | Font | |___ANALOGCONTROL | Knob | Track | | | |___FADER | | Vertical | | | |___ROTARY | |___BUTTON | Caption | Stretch | Font | UpPicture | DownPicture | | | |___BUTTONBUS | DisabledPicture | Buttons | ButtonSpacing | | | |___RADIOGROUP | | | |___OUTPUTSELECTOR | | LockIcon | | | |___ROUTERBUS | ArmedPicture | LockIcon |___WEBBROWSER | Color | Font | |___TEXTFIELD | Color | Font | |___BROWSER | ThumbWidth | ThumbHeight | WidthGap | HeightGap | Color | Font | |___FILEBROWSER->BROWSER | | | |___ISBROWSER->BROWSER | |___METER LeftMargin RightMargin TopMargin BottomMargin TickStep TickWidth DecayRate PeakHoldTime PeakZone DrawTicks DrawNumbers PeakColor NormalColor Font
So when you find next yourself setting the same value again and again, just edit the theme.txt file, restart Helm Designer to accept the changes and relax.